*Excludes Observations that spanned multiple years

Pre 19705
19701
19710
19721
19730
19740
19750
19760
19773
19782
19793
19800
19810
19821
19830
19842
19855
19861
198725
1988131
19893
19902
1991137
199284
1993101
199428
199538
199643
199741
19982
19992
20002
20016
200224
20031
200412
200520
200616
20078
200812
200923
20102
20113
201210
20137
20145
20154
201620
201720
201823
201935
202028
202129
202225
202355
20240
Total1051