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*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19841
19851
19861
19871
19882
19890
19900
19910
19920
19933
19943
19951
19960
19970
19984
19991
20000
20010
20020
20030
20040
20052
20060
20071
20081
20090
20101
20110
20122
201324
20146
20152
20163
20170
20180
20191
20200
20210
20220
20230
20240
Total62