*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19750
19760
19770
19783
19790
19800
19810
19820
19830
19840
19850
19860
19871
19881
19890
19901
19910
19920
19932
19941
19950
19961
19970
19980
19990
20000
20011
20021
20031
20040
20050
20064
20071
20081
20092
20101
20112
20121
201312
20140
20151
20160
20171
20181
20193
20202
20211
20221
20230
20241
Total53