*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970006006
1970005005
1971000000
1972004004
1973000000
1974000000
1975001001
1976001001
1977001001
1978002002
1979001001
1980002002
1981001001
1982000000
1983000000
1984000000
1985000000
1986001001
1987001001
1988000000
1989001001
1990000000
1991001001
1992004004
1993000000
1994003003
1995003003
1996004004
1997004004
1998002013
1999000000
2000000000
2001006006
2002004004
2003000000
2004003003
2005006017
2006004004
2007005005
2008001001
2009005005
2010001001
2011009009
2012004004
2013001001
2014000000
2015000000
2016002002
2017001001
Total0010002102