*Excludes Observations that spanned multiple years

Pre 1970128
19707
19713
19723
19731
19742
19752
19764
19772
19785
19792
198012
198116
198218
19832
19841
19853
19862
19871
19883
19894
19904
19914
19924
19934
19944
199510
19965
199712
199827
199913
200010
200111
200213
200317
200419
200538
200639
200725
200845
200942
201024
201123
201236
201331
201441
201532
201634
201725
201869
201960
202031
202146
202235
202337
202451
Total1142