*Excludes Observations that spanned multiple years

Pre 197065
19702
19710
19721
19733
19742
19751
19765
19774
19789
197913
19804
19816
19826
19838
19848
19854
19865
19875
19884
19893
19904
19914
19926
19938
199414
199542
199622
199743
199842
199936
200020
200112
200227
200333
200491
200591
200665
200765
2008122
2009122
201061
201145
201278
201355
201439
201531
201616
20177
Total1359