*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19740
19751
19761
19770
19780
19790
19800
19811
19820
19830
19840
19851
19860
19870
19880
19894
19906
19913
19921
19930
19941
19950
19960
19970
19980
19990
20001
20011
20020
20030
20040
20050
20061
20071
20083
20092
20100
20110
20120
20130
20142
20151
20162
20171
20180
20190
20200
20210
20220
20233
20240
Total44