*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19792
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19914
199211
19933
19942
19959
19962
19972
19981
19990
20000
20010
20027
20030
20040
20051
20060
20070
20080
20092
20101
20111
20120
20130
20140
20150
20160
20172
20180
201922
20200
20210
20221
20232
20240
Total75