*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19720
19730
19740
19750
19760
19770
19780
19791
19800
19810
19820
19830
19840
19850
19860
19870
19881
19890
19900
19910
19920
19930
19940
19950
19960
19971
19980
19991
20000
20013
20020
20030
20040
20050
20061
20070
20080
20091
20100
20115
20120
20130
20140
20151
20161
20170
20182
20195
20207
20218
202212
20231
202413
Total65