*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970004004
1970000000
1971000000
1972000000
1973000000
1974000000
1975001001
1976000000
1977001001
1978000000
1979000000
1980000000
1981000000
1982001001
1983000000
1984000000
1985001001
1986002002
1987016007
1988016007
1989053008
199022120025
199101060016
199212050026
199306110062
19940931200105
199503940043
199619430098
19970140400144
19980138300141
19990105300108
200011911600208
20011304600311
20020157800165
200303091200321
20040221400225
20050195700202
200601911700208
200701343000164
2008075180093
2009052290081
20100347000104
2011017590076
2012044140058
2013053170070
201401360019
20150770014
2016061007
2017000000
Total62731389003126