*Excludes Observations that spanned multiple years

Pre 197059
19703
19714
19721
19733
19743
19756
19764
19775
19789
19797
19806
198110
19823
198310
198410
19853
19863
19872
19888
19899
199019
199119
199237
199321
199428
199537
199641
199731
199860
1999106
2000141
200150
2002105
200353
200421
200514
20063
200717
200834
200918
201034
201129
2012107
201342
201418
201541
201651
201770
201881
201948
20203
20214
Total1551