*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000112
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977000000
1978000000
1979000000
1980000000
1981000000
1982000000
1983000000
1984000000
1985000011
1986000000
1987000000
1988000000
1989000000
1990000000
1991000101
1992000000
1993000000
1994000011
1995001001
1996000202
1997000022
1998000112
1999000000
2000000101
2001000055
2002000224
20030007512
200400234954
200500012627
2006000224
2007000101
2008000347
2009000000
2010000101
2011000303
2012000011
2013000000
2014000000
2015000000
2016000505
2017000000
2018000000
Total00334100137