*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970220180040
1970101002
1971001001
1972101002
1973100001
1974103004
1975102003
1976003003
1977101002
1978101002
1979103004
1980001001
1981101013
1982103004
1983003003
1984101002
1985303006
1986001001
1987002002
19884190014
1989003003
1990102003
1991115007
1992206008
1993103004
19943070010
1995207009
19963080011
199761100017
19982080010
1999203005
2000207009
20013080112
2002504009
2003302005
2004205007
2005117009
20063090012
200790120021
20085060011
20095060011
201010130115
2011107008
201210120013
20134070011
2014005005
201550180023
201610120013
20174090013
201840100014
201920120014
202010120013
202140160020
202230140017
2023106007
2024213006
Total135534203485