*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970005005
1970001001
1971002002
1972001001
1973002002
1974004004
1975002002
1976003003
1977002002
1978000000
1979004004
1980011002
1981003003
1982003003
1983002002
1984003003
1985003003
1986008008
1987004004
1988027009
198900100010
19900280010
19911280011
199203100013
199306270033
199401380039
199532280033
199603220025
199702210023
199801270028
19990190010
200014280033
200101260027
200200260026
200300260026
200413330037
200501360037
200600170017
200700340034
200801400041
200900220022
201001400041
201105510056
20120113100132
20131018100182
20140226300265
20151126300265
20160041500415
20170135300354
20180145700458
20190055800558
2020004004
2021001001
2022000000
Total8483273003329