*Excludes Observations that spanned multiple years

Pre 1970132
19700
19711
19721
19731
19741
19753
19761
19771
19781
19791
19800
19810
19821
19831
19842
19850
19860
19870
19880
19891
19900
19910
19922
19935
19941
19951
19960
19970
19981
19990
20000
20010
20022
20031
20040
20052
200611
20071
20082
20092
20102
20112
20120
20130
20141
20152
20160
20171
Total187