*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970015017
1970003003
1971001001
1972001001
1973001001
1974001001
1975012003
1976003003
1977007029
1978004004
19791090010
1980105006
1981004004
1982004004
1983006006
1984008008
1985102003
19860280010
198704110015
1988026008
198916160023
199077110025
19911513250053
19921329240066
1993211052700153
1994183003500353
1995102233503271
1996111993200242
199731323002167
199872393100277
19993902200115
2000103134101365
200151262700158
200262454601298
200382263000264
2004144083500457
200571175400178
2006835913201500
200792048300296
2008311011900232
2009414016400308
2010913421400357
2011510720800320
201261204200168
20131111423700362
2014313112400258
2015213680083
201628130023
2017000000
Total224422820160116479