*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19722
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19871
19880
19890
19900
19910
19920
19931
19940
19950
19960
19970
19980
19990
20000
20013
20020
20030
20040
20051
20060
20070
20080
20091
20101
20113
20122
20130
20145
20150
20164
20172
20182
20193
20202
202114
202217
202330
20244
Total98