*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19731
19740
19750
19760
19770
19781
19790
19800
19810
19820
19831
19842
19851
19860
19870
19880
19890
19901
19910
19920
19930
19940
19950
19960
19971
19981
19990
20000
20010
20020
20030
20040
20050
20060
20070
20080
20090
20100
20110
20120
20130
20142
20151
20160
20170
201814
20190
20204
20215
202210
202311
20240
Total56