*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19801
19810
19820
19830
19841
19850
19860
19870
19882
19891
19900
19915
199213
19933
19940
19952
19964
199723
19980
19990
20000
200123
20021
20030
20048
20051
20060
20071
20080
20091
20103
20112
20128
201340
201451
201523
201650
201712
201816
2019104
202031
202125
202244
202328
20240
Total528