*Excludes Observations that spanned multiple years

Pre 19701
19701
19714
19720
19731
19740
19751
19760
19772
19786
19793
19800
19814
19820
19836
19843
198511
198628
198717
1988108
19896
199046
1991133
1992198
1993209
199449
1995130
199646
199738
19985
199978
200072
200163
200214
200313
200429
20059
200625
200798
200828
200929
201064
201124
201225
201323
201430
201519
201628
201759
201837
201938
202010
202119
202220
202321
20245
Total1936