*Excludes Observations that spanned multiple years

Pre 197036
19701
19714
197214
197323
197426
197529
197624
197727
197818
197920
198056
198147
198291
1983101
1984197
1985187
1986141
198778
1988118
1989286
1990334
1991256
1992350
1993643
1994694
1995586
1996359
1997385
1998458
1999672
2000604
2001969
20021164
2003702
2004983
2005716
2006876
2007994
20081059
20091147
20101060
2011717
2012865
2013455
2014415
2015516
2016108
201716
20180
Total19627