*Excludes Observations that spanned multiple years

Pre 19704
19700
19710
19720
19730
19741
19751
19761
19770
19780
19790
19800
19811
19820
19831
19840
19851
19860
19870
19880
19891
19900
19910
19920
19930
19941
19950
19960
19970
19980
19991
20001
20012
20020
20031
20040
20050
20062
20070
20080
20091
20102
20110
20122
20131
20140
20150
20160
20171
20180
20191
20200
20211
20221
20232
20242
Total33