*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001001
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977001001
1978000000
1979000000
1980000000
1981001001
1982000000
1983001001
1984000000
1985000000
1986000000
1987000000
1988000000
1989001001
1990001001
1991001001
1992000000
1993002002
1994002002
1995000000
1996001001
1997000000
1998002002
1999000000
2000001001
2001002002
2002001001
2003000000
2004003003
2005004004
2006001001
2007003003
2008002002
2009001001
2010001001
2011001001
2012001001
2013002002
2014001001
2015002002
2016004004
2017002002
2018002002
2019003003
2020003003
2021004004
2022003003
2023000000
2024000000
Total00610061