*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19861
19871
19880
19891
19901
19918
19920
19932
199413
19957
199615
19972
19981
19990
20000
20010
20020
20030
20042
20052
20061
20070
20080
200934
201040
201130
201233
201323
201426
201531
201624
20173
20180
20190
20200
20210
20221
20230
20240
Total307