*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19862
19871
19882
19894
19901
19911
19922
19932
19941
19951
19960
19970
19980
19993
20003
20012
20020
20032
20043
20051
20062
20073
20086
20095
201012
201113
20123
20133
20149
20155
20163
20173
20182
20192
20203
20213
20225
20230
20240
Total120