*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197017190027
1970003003
1971090009
1972002002
1973035008
1974012003
1975054009
1976026008
197701100011
1978014005
19791470012
19802080010
1981016007
1982023005
1983027009
1984013004
1985121004
198603130016
198703140017
19882580015
1989116180035
1990438200062
1991322170042
199237330043
1993163310095
199411084300152
19958723100111
19962703000102
199742673400305
199852313600272
199911833700221
200042064000250
200152855200342
200222558000337
200323538400439
200425397500616
2005331514800466
2006529817100474
2007326018700450
2008122419800423
2009622521100442
2010531337100689
2011017530500480
20121552128500821
20131542229300730
20141356431000887
20159668396001073
201617702433001152
201718857514001389
2018151009584001608
2019261065564001655
202091122893002024
2021181229881002128
202271469476001952
202303130016
Total2401420880190022467