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*Excludes Observations that spanned multiple years

Pre 19702
19700
19711
19720
19731
19742
19750
19761
19770
19781
19790
19800
19810
19821
19831
19841
198515
198623
198720
198895
19898
19904
199159
19929
199312
19946
199518
19966
19974
19981
199916
200034
20012
20022
20037
20046
20052
20063
20079
20088
20098
20104
20116
20128
20133
20145
20154
20164
20177
20184
20194
20204
202111
20225
20231
20240
Total458