*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19800
19811
19820
19831
19840
19851
19860
19871
19886
19890
19903
19911
199214
19932
19943
199528
199621
19974
19980
19992
20000
20010
20025
20030
20040
20050
20061
20071
20085
20094
20103
20115
20125
20131
20143
20151
20167
201717
201810
201916
202019
202111
202224
202316
202424
Total267