*Excludes Observations that spanned multiple years

Pre 19701
19700
19712
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19854
198610
198745
198827
19891
19903
199164
199221
199322
19946
199568
199641
199777
19982
199933
200042
200143
200217
20035
20042
20056
20062
20077
200813
20093
20105
20118
201215
20135
201418
201514
20168
20175
20185
20198
202014
202124
202217
202313
20241
Total728