*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000000
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977000000
1978000000
1979002002
1980000000
1981000000
1982000000
1983000000
1984000000
1985001001
1986000000
1987000000
1988000000
1989002002
1990001001
1991002002
1992001001
1993003003
1994004004
1995003003
1996004004
1997004004
1998003003
1999003003
2000001001
2001004004
2002007007
200300100010
2004003003
2005004004
2006007007
2007004004
2008009009
2009009009
201000120012
201100170017
201200140014
201300190019
201400340034
201500310031
201600400040
201700420042
201800470047
201900500050
202000390039
202100360036
202200350035
2023001001
2024001001
Total0050900509