| 1998 |  #1 |
 #2 |
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| 2000 |  #3 Summer/Fall |
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| 2001 |  #4 Winter/Spring |
 #5 Summer/Fall |
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| 2002 |  #6 Winter/Spring |
 #7 Summer/Fall |
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| 2003 |  #8 Winter/Spring |
 #9 Summer/Fall |
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| 2004 |  #10 Winter/Spring |
 #11 Summer/Fall |
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| 2005 |  #12 Winter/Spring |
 #13 Summer/Fall |
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| 2006 |  #14 Winter/Spring |
 #15 Summer/Fall |
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| 2007 |  #16 Winter/Spring |
 #17 Summer/Fall |
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| 2008 |  #18 Winter/Spring |
 #19 Summer/Fall |
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| 2009 |  #20 Winter/Spring |
 #21 Summer/Fall |
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| 2010 |  #22 Winter/Spring |
 #23 Summer/Fall |
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| 2011 |  #24 Winter/Spring |
 #25 Summer/Fall |
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| 2012 |  #26 Winter/Spring |
 #27 Summer/Fall |
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| 2013 |  #28 Winter/Spring |
 v0.1 Jul/Sep |  #29 Summer/Fall |
 v0.2 Oct/Dec | ||||||||
| 2014 |  v0.3 Jan/Mar |  #30 April |
 v0.4 Apr/Jun |  v1.1 Jul/Sep |  v1.2 Oct/Dec | |||||||
| 2015 |  v1.3 Jan/Mar |  v1.4 Apr/Jun |  v2.1 Jul/Sep |  v2.2 Oct/Dec | ||||||||
| 2016 |  v2.3 Jan/Mar |  v2.4 Apr/Jun |  v3.1 Jul/Sep |  v3.2 Oct/Dec | ||||||||
| 2017 |  v3.3 Jan/Mar |  v3.4 Apr/Jun |  v4.1 Jul/Sep |  v4.2 Oct/Dec | ||||||||
| 2018 |  v4.3 Jan/Mar |  v4.4 Apr/Jun | v5.1 Jul/Sep | v5.2 Oct/Dec | ||||||||