*Excludes Observations that spanned multiple years

Pre 197019
19703
197110
19721
19733
19744
19757
19762
19774
19782
197911
198017
198115
19826
198314
198411
19854
19862
19872
19884
19895
19905
19915
19927
19937
19941
19954
19965
199712
199815
199927
200032
200144
200235
200330
200443
200514
200630
200735
200824
200939
201041
201127
201234
201346
201461
201553
201647
201753
201854
201963
202046
202153
202244
202331
202420
Total1233