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*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19830
19841
19850
19860
19870
19880
19891
19900
19910
19920
19930
19940
19954
19960
19971
19981
19992
20000
20010
20020
20033
20040
20053
20060
20071
20081
20090
20102
20115
20121
20133
20144
20151
20163
201720
20180
201913
20201
20211
20222
20230
20240
Total75