*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19751
19760
19770
19780
19791
19800
19810
19821
19830
19840
19851
19860
19870
19880
19890
19900
19910
19920
19930
19941
19950
19960
19970
19980
19990
20000
20010
20020
20031
20040
20050
20060
20070
20080
20091
20101
20111
20120
20130
20143
20150
20161
20170
20181
20192
20205
20210
20220
20230
20240
Total23