*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19771
19780
19791
19800
19811
19821
19830
19841
19850
19863
19874
19886
19890
19901
19911
19921
19932
19944
199527
19962
19975
19988
19998
20000
20012
20021
20031
20040
20050
20062
20071
20080
20090
20101
20110
20121
20130
20141
20151
20161
20173
20181
20196
202013
202113
20225
20233
20240
Total133