*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19742
19753
19761
19770
19780
19792
19800
19810
19821
19830
19841
19851
198610
19871
19881
19890
19901
19910
19925
19935
19941
19955
19963
19970
19980
19990
20000
20013
20020
20036
20041
20050
20066
20074
20082
20090
201044
201153
20128
201352
201431
201536
201639
201789
201857
201988
20200
20210
20220
Total562