*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
200314
200419
200536
200637
200724
200841
200941
201020
201117
201231
201327
201437
201528
201622
201720
201857
201936
202015
20214
Total825