*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700570012
1970003003
1971011002
1972013004
1973011002
1974006006
1975025007
1976032005
1977126009
1978014005
1979036009
1980004004
1981021003
1982017008
1983014005
1984025007
19850370010
1986125008
198703190022
198803200023
198905300035
1990224120038
1991617160039
199211911200204
199326141600632
19941133323001357
19954103123001058
19960118514001199
199718212200844
199818811900901
199901651400179
20003103716001056
200119341800953
200229003000932
2003096045001005
20041118228001211
200513005200353
200617956100857
20072135487001443
200815487200621
200901279200219
2010351622700746
2011030516100466
2012664812100775
20138817220001045
20145919250001174
2015101059300011370
201641322287001613
201751435353001793
201841458463001925
201951313533041855
202051674685022366
202151442661002108
202231721548002272
202306716100732
202404504000490
2025000000
Total953019057280736020