*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19931
19942
19950
19960
19971
19980
19990
20000
20010
20020
20030
20040
20050
20061
20070
20080
20090
20106
201140
20121
20130
20140
20150
20164
20172
20189
201919
202014
20212
20225
202324
20240
Total132