*Excludes Observations that spanned multiple years

Pre 19705
19701
19714
19723
19730
19740
19750
19760
19774
197811
19797
19803
19810
19823
19830
198412
198581
1986101
1987118
1988567
198932
1990107
1991231
1992147
1993308
1994348
1995246
1996124
199736
199851
199927
200035
200112
200230
2003130
2004130
2005117
2006117
2007102
2008154
2009171
2010123
2011124
2012198
2013175
2014127
2015136
2016123
2017108
201818
201929
202020
202148
202225
202317
20246
Total4852