*Excludes Observations that spanned multiple years

Pre 19708
19701
19712
19720
19731
19740
19750
19760
19775
19783
19795
19801
19811
19821
19830
19841
19853
198614
198711
1988102
19893
199029
1991149
1992132
1993153
199457
1995144
199654
199762
199829
199932
200014
200163
200224
200337
200431
200519
200612
200750
200825
200928
2010152
201183
201215
201322
201422
201517
201646
201748
201848
201975
202069
2021122
2022102
202337
202435
Total2199