*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19831
19841
19850
19860
19870
19880
19891
19901
19910
19920
19930
19944
19950
19961
19971
19980
19990
20000
20013
20020
20030
20040
20050
20060
20070
20081
20090
201014
201110
20121
20132
20140
20150
20163
20171
20181
201915
202010
20217
202212
202313
20243
Total107