*Excludes Observations that spanned multiple years

Pre 197044
19701
19710
19722
19730
19740
19750
19764
19774
19780
19790
19800
19811
19820
19830
19840
19850
19860
19870
19885
19893
19908
19915
19926
19930
199411
19955
19963
19978
19983
19993
20006
20019
200219
200310
20041
20052
20066
20075
20084
20097
201030
20114
201227
201310
201484
2015121
201626
201726
201841
201947
202037
202174
202255
202325
20240
Total792