*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001001
1970000000
1971000000
1972000000
1973001001
1974000000
1975001001
1976001001
1977000000
1978000000
1979001001
1980003003
1981002002
1982006006
1983001001
1984001001
1985001001
1986026008
19870290011
1988034007
19890770014
199011650022
19910890017
199224110017
1993316130032
1994229190050
1995511120028
199632280033
199744780059
1998151100062
1999025110036
2000037140051
200144990062
2002064130077
200301012500126
200401062400130
20051872100109
20060975500152
20070804900129
20080526400116
2009024420066
20102739900174
201101914400163
20121485900108
201317440052
2014021460067
201505130018
2016041005
2017021003
Total301119874002023