*Excludes Observations that spanned multiple years

Pre 197010
19700
19711
19720
19731
19740
19751
19760
19770
19780
19790
19800
19810
19820
19831
19840
19851
19863
198750
198885
198918
19909
199145
199253
199386
199415
199575
199640
199741
19989
199938
200019
200122
20027
200338
200426
200513
20067
200716
200815
200917
201021
201119
201219
201350
201427
201513
201620
201711
20189
20199
202018
202117
20225
20232
20240
Total1002