*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001023
1970000000
1971000000
1972000000
1973001001
1974000000
1975000011
1976000022
1977001023
1978001012
1979013004
1980001001
1981002013
1982002013
1983000011
1984000000
1985000000
1986003003
1987003003
1988013015
1989002035
19900170210
199103400245
199201250026
199301200324
199401240732
199500180119
199621200124
199712180425
199801110113
199902120418
20001080110
200134120221
200201160219
200310120215
2004006028
2005004037
200600120416
200700120416
200800180119
200920390041
201000280028
201121620166
201211170322
201300150015
2014001001
2015001001
2016001001
2017000000
Total1322482065582