*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001001
1970000000
1971000000
1972001001
1973000000
1974001001
1975001001
1976002002
1977001001
1978001001
1979000000
1980011002
1981001001
1982002002
1983001001
1984004004
1985002002
1986006006
1987025007
1988022004
19890290011
19900960116
19910670013
199206130019
199307110018
199411241500140
199511591500175
199601901200202
1997052110063
19980190900199
199902280030
200002081000218
200101141600130
200201752400199
20030902600116
200401391200151
2005048170065
2006032230055
2007041450086
2008061220083
200907400047
20100417900120
20110168900105
201203390042
201304770054
201402370030
201500100010
2016010001
2017001001
Total21848585012436