*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19791
19800
19810
19821
19831
19840
19850
19860
19871
19880
19890
19900
19913
19922
19932
199411
19953
19963
19971
19980
19990
20002
20012
20020
200328
20046
20051
20063
20070
20080
20095
20101
20112
20121
201314
20143
20152
201615
201728
201824
201932
202020
202142
202219
20232
20240
Total282