*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19740
19750
19760
19770
19781
19791
19800
19810
19820
19831
19841
19854
19860
19871
19882
19893
19900
19913
19922
19932
19940
19950
19963
19973
19980
19990
20000
20015
20026
20037
20046
200510
200618
200713
20088
200913
201035
201155
201249
201338
201440
201543
201640
201736
201843
201928
202030
202118
20226
20231
20240
Total582