*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19831
19841
19850
19860
19870
19880
19891
19906
19912
19923
19939
19940
19951
19960
19970
19980
19990
20001
20010
20020
20033
20041
20052
20060
20070
200814
200911
20100
20110
20127
20135
20140
20150
20161
20170
20180
20190
20201
20212
20220
20234
20240
Total79