*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19741
19751
19760
19771
19780
19792
19804
19810
19821
19831
19843
19850
19860
19870
19880
19891
19902
19912
19921
19931
19941
19954
19962
19978
19984
19995
20003
200110
20020
20034
20043
20057
20064
20071
20086
20090
201044
201124
20122
201314
201416
201517
201626
201727
201843
201938
20200
20210
20220
Total334