*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19862
19871
19886
19891
19903
19912
199221
19933
19941
19954
19966
19971
19980
19992
20006
20010
20022
20030
20041
20051
200611
20075
20086
20099
20102
20114
20121
20131
20141
20150
20160
20170
20180
20193
20200
20210
20220
20230
20240
Total107