*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197021702333
1970001012
1971000011
1972002024
1973110002
1974000033
1975000033
1976001012
19770150410
197812110317
1979222028
19806160417
198160401020
19821090818
19834260921
1984101001223
198591611128
198660611023
198710291830
198811080625
1989811601136
199085221945
19911011520881
199224172001172
19931273601469
19941994901895
19951875001186
19961621460891
199710113701371
199844215605126
1999421248512119
200021124232199
2001192245416106
2002212057011109
2003414838312142
2004413852115147
2005314251021145
200616164001587
200714154711390
2008911260854
2009874301371
2010211450016101
201122970018119
201210162301564
2013815330965
201422191601067
20153082101372
20163928150789
20171371001545
20184240414
20190340310
202021100114
2021231028
Total6654911223214992899