*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970011002
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977000000
1978000000
1979001001
1980001001
1981010001
1982000000
1983000000
1984000000
1985000000
1986000000
1987000000
1988100001
1989000000
1990000000
1991000000
1992000000
1993000000
1994011002
1995000000
1996010001
1997010001
1998010001
1999010001
2000011002
2001012003
2002014005
2003012003
2004010001
2005032005
2006000000
2007012003
2008011002
2009001001
2010002002
2011001001
2012051006
2013030003
2014020002
2015061007
2016070007
2017041005
2018150006
201901840022
2020000000
2021000000
2022000000
Total267290098