*Excludes Observations that spanned multiple years

Pre 19702
19700
19711
19720
19730
19740
19752
19760
19770
19781
19790
19800
19810
19822
19833
19841
198510
19868
19875
198833
198915
199038
199161
199247
199381
199427
199557
199671
199756
19986
199918
200024
200111
200217
200319
200421
20055
200620
200714
200824
200942
201036
201146
201228
201344
201450
201543
201632
201762
201857
201924
202013
202114
202216
20237
20241
Total1215