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*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19741
19750
19760
19770
19780
19791
19801
19811
19821
19830
19841
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19953
19960
19970
19980
19990
20001
20010
20020
20030
20041
20051
20061
20070
20080
20091
201036
201121
20120
20131
20143
20151
20162
20173
20186
20195
20202
202110
20223
20232
20240
Total109