*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19831
19840
198511
19864
19870
19885
19890
19900
19910
19920
19935
19940
19951
19960
19970
19980
19990
20000
20011
20020
20030
20040
20050
20060
20070
200812
20090
20100
20110
20120
20130
20140
20150
20160
20171
20180
20199
20206
20217
20225
202315
20240
Total84