*Excludes Observations that spanned multiple years

Pre 197034
19703
19711
19724
19732
19741
19750
19763
19776
19788
197912
19802
198110
19823
19832
19842
19852
19861
198716
19881
19892
19901
19916
19922
19932
199417
199513
199624
199717
199813
199910
200026
200138
200228
200333
200413
200514
200610
200721
200815
200955
201011
201111
20124
201316
20149
20159
20164
201711
201813
201913
20208
20219
20224
20239
20241
Total605