*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19770
19781
19791
19800
19811
19820
19831
19841
19851
19860
19870
19880
19891
19901
19910
19920
19931
19940
19951
19961
19970
19980
19990
20001
20010
20020
20030
20040
20050
20060
20070
20082
20091
20105
20111
20121
20131
20141
20150
20161
20173
20181
20192
20200
20210
20220
20230
20240
Total32