*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19741
19751
19760
19770
19780
19791
19800
19810
19820
19830
19841
19850
19860
19871
19880
19891
19902
19915
19922
19931
19940
19950
19960
19970
19980
19992
20000
20010
20021
20030
20040
20052
20062
20070
20080
20090
201021
201132
20121
20134
20142
20150
201621
201742
201823
201948
202021
202123
202213
202341
20240
Total315