*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19891
19900
19912
19920
19930
19941
19950
19960
19970
19980
19990
20000
20010
20020
200317
20043
20050
20060
20070
20082
20098
20100
20110
20121
20130
20140
20150
20161
20170
20180
20190
20200
20210
20220
20230
20240
Total39