*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19720
19730
19740
19750
19760
19770
19780
19791
19800
19812
19820
19830
19841
19850
19860
19876
19880
19890
19900
19915
19923
19933
19943
19956
19961
199722
19980
19990
20000
20013
20022
20032
20041
20051
20064
20071
20080
20090
201019
201122
20123
201323
201435
201529
201647
201776
201886
201984
202076
202192
2022100
202398
20242
Total860