*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
19890
19900
19916
19927
19930
19940
19950
19960
19970
19980
19990
20000
20017
20020
20030
20040
20050
20062
20070
20080
20090
20100
20110
20121
20131
20140
20150
20162
20172
20186
201910
20208
202114
20222
20230
Total71