*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19701880017
1970000000
1971060006
1972000000
1973010001
1974000000
1975000000
1976000000
1977000000
1978002002
1979000000
1980022004
1981002002
1982000000
1983000000
1984000000
1985000000
1986011002
1987010001
1988003003
1989072009
1990010001
1991013004
1992020002
1993010001
1994032005
1995000000
1996010001
1997021003
1998041005
1999000000
2000020002
2001001001
2002022004
2003010001
2004002002
20050820010
2006044008
2007062008
2008011002
2009040004
2010016007
2011031004
201201920021
2013022004
2014032005
2015044008
2016071008
2017020002
2018021003
2019020002
202001400014
202101000010
2022024006
2023001001
2024010001
Total11416500207