*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970021003
1970001001
1971000000
1972000000
1973000000
1974000000
1975001001
1976001001
1977001001
1978000000
1979000011
1980003003
1981002002
1982001001
1983000022
1984000000
1985001001
1986010012
1987026008
1988051006
19891770015
199001650122
199121120015
1992010110021
1993026100036
1994361240088
1995020220042
1996048180066
19973931200108
1998083150098
1999166170286
20003793300115
200121322000154
20020993400133
200322732902306
200403772800405
200501783700215
200651507701233
2007012310200225
200802669400360
200927013500207
2010114019800339
201102720600233
20120556000115
2013045490094
2014139470087
201509390048
201601140015
2017000000
Total26251413640103914