*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19732
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19861
19871
19880
19893
19900
19911
19920
199312
19943
19952
19963
19971
19980
19993
20002
20011
20020
20030
20041
20051
20062
20072
20083
20090
20103
20111
20124
20132
20141
20152
20163
20170
20180
20190
20202
20210
20220
20230
20240
Total63