*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19853
19860
19871
19882
19891
19900
19910
19921
19930
19940
19955
19962
19970
19984
19995
20000
20011
20020
20030
20040
20050
20060
20072
20080
20091
20100
20110
20120
20133
20140
20150
20162
20171
20182
20190
20200
20210
20221
20230
20240
Total37