*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19733
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19841
19850
19860
19871
19880
19890
19901
19910
19920
19930
19940
19950
19960
19970
19981
19991
20000
20010
20020
20030
20040
20052
20060
20070
20082
20090
20105
20115
20121
20134
20143
20157
20161
20171
20189
20197
202011
20219
20228
20238
20240
Total91