*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001001
1970000000
1971000000
1972000000
1973000000
1974000000
1975001001
1976000000
1977000000
1978000011
1979000000
1980000000
1981000000
1982000000
1983000000
1984000000
1985001001
1986000000
1987006006
1988005005
1989000000
1990003003
1991007007
1992008008
199300120012
1994006006
199500120012
1996007007
1997009009
1998007007
1999007007
200000120012
2001009009
2002006006
2003006006
2004005005
2005007007
2006002002
2007008008
2008009009
2009009009
201000170017
201100130215
201200170017
201300320032
201400290029
201500300232
201600230023
201700420042
201800440044
201900300030
202000810081
202100430043
202200340034
2023000000
2024000000
Total0060005605