*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197017260034
1970003003
19710910010
1972002002
1973036009
1974013004
1975054009
1976026008
197701100011
1978014005
19791490014
19802080010
1981016007
1982023005
1983027009
1984014005
1985121004
198603130016
198703140017
19882580015
1989116190036
1990438200062
1991322170042
199237330043
1993163310095
199411084300152
19958723100111
19962703000102
199742673400305
199852313600272
199911833700221
200042064000250
200152855200342
200222558000337
200323538400439
200425397600617
2005331515200470
2006529817100474
2007326018900452
2008122419800423
2009622521100442
2010531337100689
2011017530500480
20121452228500821
20131542229400731
20141356431300890
20158669396001073
201616703433001152
201717858515001390
2018141010584001608
2019251066565001656
202061126895002027
2021131234882002129
202261471489001966
202303730076
202401180019
Total2251422681400022591