*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19751
19760
19770
19780
19791
19800
19811
19822
19830
19843
19850
19860
19871
19881
198923
19905
19910
19924
19930
19941
19951
19960
19972
19980
19995
20003
20011
20020
20031
20046
20053
20065
20072
20087
20094
20100
20111
20120
20130
20140
20150
20160
20171
20182
20192
20203
20215
20223
20231
20241
Total104