*Excludes Observations that spanned multiple years

Pre 197076
19702
19710
19720
19730
19742
19751
19761
19771
19780
19794
19803
19810
19822
19831
19842
19851
19860
19871
19883
19895
19906
199111
199211
19937
19946
19956
19960
19972
19981
199911
200018
20016
20020
20031
20048
20058
20064
20077
200815
200921
201034
201122
20129
201310
20147
201517
201624
201713
201832
201914
20207
20217
202217
202310
202410
Total487