Probe
Other issues exist.
1969 |
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#1 Jun/Jul |
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#4 |
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1970 |
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 v1 #9 Aug |
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 v2 #1 Dec |
1971 |
v2 #2 |
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1972 |
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1973 |
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1974 |
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 #25 Mar |
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 #26 Sep/Oct |
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1975 |
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 #27 Mar |
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#28 Jun |
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 #30 Oct |
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1976 |
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 #31 Mar |
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 #32 Aug |
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1977 |
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 #33 Jun |
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1978 |
 #34 Jan |
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 #35 Mar |
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 #36 May |
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 #37 Aug |
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 #38 Nov |
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1979 |
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 #39 Feb |
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 #40 May |
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 #41 Aug |
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 #42 Nov |
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1980 |
 #43 Jan |
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 #44 May |
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 #45 Aug |
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 #46 Nov |
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1981 |
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 #47 Feb |
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 #48 May |
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 #49 Aug |
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1982 |
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 #50 Feb |
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 #51 May |
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 #52 Aug |
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 #53 Nov |
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1983 |
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 #54 Feb |
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 #55 May |
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 #56 Aug |
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 #57 Nov |
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1984 |
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 #58 Feb |
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 #59 May |
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 #60 Nov |
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1985 |
#61 |
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1986 |
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#65 Jun |
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#66 Aug |
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1987 |
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#67 Feb |
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#68 |
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#70 Nov |
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1988 |
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#72 May |
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#73 Aug |
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1989 |
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#76 May |
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1990 |
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#81 Sep |
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1991 |
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#84 Aug |
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1992 |
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#87 Feb |
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#90 Dec |
1993 |
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#91 Mar |
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#92 Jul |
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#93 Oct |
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1994 |
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#94 |
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#95 |
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#96 |
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#97 |
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1995 |
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#100 Aug |
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#101 |
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#102 |
1996 |
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#105 |
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1997 |
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1998 |
#108 |
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1999 |
#110 |
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2000 |
#111 |
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2001 |
#113 |
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#114, 3rd Quarter |
#115, 4th Quarter |
2002 |
#116, 1st Quarter |
#117, 2nd Quarter |
#118, 3rd Quarter |
#119, 4th Quarter |
2003 |
#120 |
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#122 |
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#125 |
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2004 |
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#126 Sep |
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2005 |
#127, 1st Quarter |
#128 |
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2006 |
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 #132 |
2007 |
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#134 Jul |
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#135 Nov |
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2008 |
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#136 |
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 #137 Jun |
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#138 Sep |
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#139 Dec |
2009 |
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#140 Mar |
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#141 Jun |
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#142 Sep |
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2010 |
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#143 Mar |
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#144 Jun |
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#145 Sep |
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#146 Nov |
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2011 |
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#147 Mar |
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#148 Jun |
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#149 Sep |
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#150 Nov |
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2012 |
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 #151 Mar |
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 #152 Jun |
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 #153 Sep |
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 #154 Dec |
2013 |
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 #155 Mar |
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 #156 Jun |
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 #157 Sep |
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 #158 Dec |
2014 |
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 #159 Mar |
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 #160 Jun |
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 #161 Sep |
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 #162 Dec |
2015 |
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 #163 Mar |
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 #164 Jun |
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 #165 Sep |
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 #166 Dec |
2016 |
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 #167 Mar |
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 #168 Jun |
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 #169 Sep |
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 #170 Dec |
2017 |
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 #171 Mar |
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 #172 Jun |
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 #173 Sep |
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 #174 Dec |
2018 |
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 #175 Mar |
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 #176 Jun |
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 #177 Sep |
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 #178 Dec |
2019 |
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 #179 Mar |
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 #180 Jun |
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 #181 Sep |
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 #182 Dec |
2020 |
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 #183 Mar |
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 #184 Jun |
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 #185 Sep |
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 #186 Dec |
2021 |
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 #187 Mar |
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 #188 Jun |
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 #189 Sep |
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 #190 Dec |
2022 |
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 #191 Mar |
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 #192 Jun |
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 #193 Sep |
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 #194 Dec |
2023 |
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 #195 Mar |
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 #196 Jun |
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 #197 Sep |
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 #198 Dec |
2024 |
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 #199 Mar |
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 #200 Jun |
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 #201 Sep |
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 #202 Dec |