*Excludes Observations that spanned multiple years

Pre 197067
19703
19710
19720
19732
19746
19752
19765
19770
19787
19791
19802
19811
19820
19832
19842
19853
19860
19871
19881
19891
19901
19918
19923
19933
19943
199526
199614
199718
199828
199925
200013
20015
200297
200341
200488
2005194
200621
200763
2008416
2009242
2010309
201149
201243
2013137
201436
20154
201629
201716
201821
201936
202040
202123
202222
202346
20249
Total2235