*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19720
19731
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19841
19850
19860
19871
19885
19890
19900
19912
19920
19930
19940
19952
19961
19970
19980
19992
20001
20010
20020
20030
20040
20050
20060
20070
20080
20090
20100
20111
20122
20130
20140
20150
20161
20171
20183
20190
20202
202114
202212
20239
20243
Total66