*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970003003
1970000000
1971000000
1972000000
1973001001
1974000000
1975000000
1976001001
1977002002
1978000000
1979000000
1980001001
1981000000
1982001001
1983000000
1984000000
1985001001
1986002002
1987008008
1988006006
1989003003
1990005005
199100100010
1992007007
1993009009
199400110011
199500150015
199600140014
1997008008
199800100010
1999008008
200000120012
200100180018
200200260026
200300150015
2004007007
200500150015
200600170017
200700160016
200800120012
200900200020
201000250025
201100200020
201200250025
201300280028
201400220022
201500370037
201600640064
201700690069
201800590059
201900630063
202000860086
202100770077
202200230023
2023000000
Total0088200882