*Excludes Observations that spanned multiple years

Pre 19709
19702
197111
19721
19730
19740
19751
19760
19775
19786
19792
19805
19810
19824
19830
19843
198590
1986121
1987223
1988720
1989106
199058
1991327
1992224
1993663
1994340
1995482
1996336
1997244
199853
1999139
2000142
2001137
2002105
200397
2004146
2005101
200665
2007102
2008126
2009117
2010127
2011124
2012139
2013121
2014139
2015133
2016107
2017139
201892
201969
202030
202187
202292
202363
20240
Total6775