*Excludes Observations that spanned multiple years

Pre 197022
197020
197128
197218
197316
197421
19754
19765
197727
197814
197945
19803
198159
19828
198355
198431
198528
19864
19870
19886
19892
199013
199112
199231
199360
199436
199524
199698
199738
199828
199927
200023
2001142
2002110
200331
200432
200527
200650
200723
200861
200965
201086
2011104
201270
201363
201446
201527
201619
20175
Total1767