*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000000
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977001001
1978000000
1979000000
1980000000
1981000000
1982000000
1983000000
1984000000
1985000000
1986000000
1987000000
1988000000
1989000000
1990000000
1991000011
1992002024
1993001001
1994001012
1995007108
1996003003
1997001001
1998001001
1999002024
2000001012
2001002002
2002002013
2003004004
2004003003
2005003003
2006002024
2007001023
2008001001
2009008008
2010002002
2011002002
2012007007
2013004037
2014008008
2015003003
201600180220
201700300030
201800230023
201900150520
2020000022
2021000000
2022000000
Total00158124183