muddysneakers: I noticed that trend too.
Well, I for one seem to pretty much stick to my pace. Games finished by end of August each year (since I won't be finishing another this month, that's for sure), as far as I could tell (tracking dates since 2013, bar what I didn't consider as really "counting" in some years, and could dig up approximate dates back to 2010):
2010: 5
2011: no more than 1 (unknown date for that)
2012: 4
2013: 3 (actually 2 parts of one and another that shouldn't really count, so may be just 1)
2014: 6 or 7 (unknown date for one that shouldn't really count)
2015: 2
2016: 4 (counting base and expansion of one separately due to major differences)
2017: let's say 4 (counting a base game, expansion not finished, and counting a bunch of little browser games made during the major protests that were here that year as a single game)
2018: 4 (including a mobile game and the expansion mentioned as not finished in 2017)
2019: 3
2011 and 2014 stand out at either end, maybe 2015 and 2010 too if you want to be stricter about it, otherwise, 3-4 in 2012, 2013 and from 2016 onwards.