*Excludes Observations that spanned multiple years

Pre 19709
19701
19711
19720
19730
19741
19751
19761
19775
19781
19791
19801
19812
19822
19833
19842
19850
19860
19870
19882
19896
19901
199134
199243
199321
19944
199541
19963
19972
19986
19995
200011
200151
200211
20038
200450
20051
20067
200722
200828
200928
201040
201167
201224
201323
201428
201511
201645
201736
201832
201965
202052
202151
202250
202312
Total952