*Excludes Observations that spanned multiple years

Pre 19700
19703
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19831
19840
19850
19860
19870
19880
19891
19902
19910
19922
19935
19941
19952
19965
19973
19980
19991
20000
20010
20022
20035
200410
20055
20063
20073
20080
20094
20102
20118
20124
20135
20148
20156
20167
20173
20180
Total102