*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970004004
1970001001
1971000000
1972000000
1973003003
1974003003
1975000000
1976000000
1977002002
1978000000
1979001001
1980000000
1981001001
1982000000
1983000000
1984001001
1985000000
1986001001
1987000000
1988006006
1989002002
1990001001
1991003003
1992005005
1993001001
1994005005
1995001001
1996002002
1997007007
1998003003
1999007007
2000001001
2001001001
2002003003
2003003003
2004005005
2005005005
2006006006
200700100010
2008005005
2009007007
2010003003
2011003003
2012002002
2013002002
2014006006
2015008008
201600160016
201700140014
2018007007
201900100010
202000170017
202100140014
202200110011
2023001001
2024003003
Total0022300223