*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19741
19750
19761
19770
19780
19792
19802
19810
19820
19830
19841
19850
19860
19870
19880
19891
19900
19910
19920
19930
19941
19953
19960
19970
19981
19990
20000
20011
20020
20030
20040
20050
20061
20070
20080
20093
20104
20111
20120
20130
20142
20150
20165
20175
20182
20194
20203
20210
20220
Total51