*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19781
19791
19800
19810
19820
19830
19841
19851
19860
19870
19880
19891
19900
19910
19920
19931
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
20050
20060
20070
20081
20090
20105
20111
20121
20133
20142
20151
20161
20174
20180
20192
20201
20212
20222
20234
20240
Total36