*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970007007
1970000000
1971000000
1972000000
1973001001
1974000000
1975003003
1976000000
1977004004
1978001001
1979005005
1980003003
1981001001
1982003003
1983005005
1984000000
1985002002
198600100010
1987009009
1988005005
1989009009
199000110011
199100280028
199200210021
199300230023
199400230023
199500280028
199600230023
199700220022
199800180018
199900190019
200000220022
200100200020
200200300030
200300370037
200400270027
200500270027
200600280028
200700330033
200800310031
200900490049
201000370037
201100310031
201200690069
201300420042
201400560056
201500680068
201600870087
20170012500125
20180012900129
20190014500145
20200017300173
20210013800138
202200970097
2023007007
202400110011
Total001803001803