*Excludes Observations that spanned multiple years

Pre 19706
19700
19713
19720
19730
19740
19750
19761
19773
19780
19790
19801
19810
19821
19830
19841
198515
198642
198738
1988253
198913
199014
199196
199280
1993122
199485
1995131
199675
1997113
19986
199990
200063
200186
200232
200314
200421
200510
200613
200714
200815
200931
201013
201133
201248
201329
201431
201541
201642
201729
20183
20195
20206
202138
202218
20235
20240
Total1829