*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970113005
1970000000
1971000000
1972000000
1973000000
1974000000
1975001001
1976000000
1977000000
1978001001
1979063009
198011030014
19811360010
198200170017
1983000000
1984000000
1985000000
1986001001
1987131005
1988024006
1989011002
1990152008
1991531009
1992122005
1993021003
199421670025
199517030074
199631620021
1997098800106
199803890047
1999121220044
2000015140029
200114330047
2002042130055
20031862200109
200421471800167
200541367400214
200601261400140
200742341200250
200801491700166
2009377110091
201011533600190
201122332700262
201202394700286
201302010021
201406000060
2015123006
2016001001
2017000000
Total372059411002507