*Excludes Observations that spanned multiple years

Pre 197056
19700
19711
19721
19731
19740
19750
19760
19770
19784
19793
19800
19810
19820
19830
19840
19850
19861
19870
19880
19893
19900
19910
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
20050
20060
20071
20080
20090
20100
20110
20120
20130
20140
20150
20162
20171
20180
20190
20200
20214
20220
20230
20240
Total78