*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970102025
1970000000
1971000000
1972000000
1973000000
1974000000
1975000000
1976000000
1977000000
1978001001
1979001001
1980000011
1981000011
1982000000
1983012003
1984000000
1985001001
1986104005
1987206008
1988015006
1989105006
199014120219
199142230130
199231100014
199332210026
199414210026
199572320142
199643150022
199712220126
19981490014
199912110014
200023110117
200134140122
200203140017
200340200125
200401150016
200522170021
200623170123
200700140014
200810200021
200990840093
201010416200176
20116219200200
20128017002180
201300850085
201420240026
201510160017
2016111003
2017000000
Total825110790151227