*Excludes Observations that spanned multiple years

Pre 197098
19706
19713
19723
19731
19742
19752
19764
19772
19784
19792
198012
198113
198218
19832
19841
19853
19862
19871
19883
19893
19904
19914
19923
19934
19944
19959
19965
199711
199823
199913
200010
200111
200213
200313
20049
200524
200615
200713
200837
200934
201015
201114
201222
201322
201420
201523
201617
20175
Total582