*Excludes Observations that spanned multiple years

Pre 197061
19703
19711
19721
19730
19742
19752
19764
19774
19784
19794
19806
19812
198212
198311
19843
19854
19863
19874
19881
19894
19905
19917
19925
199312
199418
199542
199634
199718
199832
199921
20007
200134
200256
200392
2004139
2005221
200666
2007158
2008221
2009158
201086
201167
201227
201342
20147
201514
201610
20175
Total1740