*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19771
19780
19790
19800
19810
19820
19830
19840
19850
19860
19871
19882
19890
19900
19916
19920
19930
19940
19950
19960
19971
19980
19990
20000
20011
20020
20032
20040
20050
20061
20070
20080
20090
20106
20115
20123
20135
20140
20154
20162
20172
20180
201924
20203
20212
20220
20234
20240
Total75