*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970002406
1970000101
1971000000
1972000101
1973000000
1974000000
1975000202
1976000202
1977000303
1978000202
1979000628
1980000257
1981001203
1982000202
1983000303
1984000101
1985000404
1986000505
19870009110
1988000314
19890018211
199000871530
199100119929
19920019313
199300291425
1994001144762
1995005112642
1996008133455
199700324141168
19980012079100
199900234100136
20000034971123
200100217136155
200200049135184
200300242244288
200400346193242
2005008211204423
200600640180226
200700134144179
200800557138200
20090078758152
2010009152196357
2011000133112245
2012003137249389
2013003691789
2014000731992
2015006111380497
20160015846105
20170007093163
2018000000
Total0095165530944844