*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000000
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977003003
1978001001
1979000000
1980000000
1981001001
1982000000
1983001001
1984000000
1985002002
1986002002
1987005005
1988005005
1989005005
1990003003
199100100010
1992008008
1993009009
199400100010
199500140014
199600100010
1997009009
199800200020
199900110011
200000180018
200100280028
200200370037
200300270027
200400130013
200500150015
200600220022
200700350035
200800220022
200900200020
201000160016
201100220022
201200280028
201300330033
201400440044
201500770077
201600770077
201700990099
20180010800108
20190011000110
202000940094
20210012100121
202200650065
2023003003
2024000000
Total001263001263