*Excludes Observations that spanned multiple years

Pre 19706
19700
19715
19722
19730
19740
19750
19760
19770
19781
19790
19800
19810
19823
19830
19842
198520
198639
198747
1988124
198917
19906
199157
199222
199331
199450
199534
199660
199759
199810
199924
200014
200133
200214
20038
200419
200513
200615
200720
200811
200925
201018
201116
201214
201314
201414
201514
201616
20175
20180
20191
20200
20211
20225
20232
20241
Total912