*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19731
19740
19750
19761
19772
19783
19791
19800
19810
19821
19830
19840
19850
19860
19870
19880
19891
19900
19910
19920
19931
19941
19950
19962
19970
19981
19990
20000
20010
20020
20030
20040
20050
20060
20070
20080
20090
20100
20111
20120
20130
201427
20150
20160
20170
20180
20190
20201
20210
20222
20230
20240
Total46