*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197040305663
1970003036
19710080917
197210230529
1973013048
197401190525
197510100819
1976001101223
197761290734
19781918701155
19792165101492
19801318110057198
1981635802188
198218555041119
198320876018122
1984221348030113
198531368040124
1986482805999
1987213014882
19888650254120
1989684512484
1990151490225146
19912226113221184
1992910127024170
1993329196041278
19941014188030242
199599135126180
19962115139119195
1997139195038255
1998924160032225
19991327185130256
20007434233043384
20012019143139222
20022325174022244
200391893021141
200472568024124
200571871036132
20061537107130190
200702984135149
2008724113832184
2009747179028261
20104669156219292
20114641307133428
20124111221166340
20135825229098410
20144529134065273
201524952365060726
20161348296061499
20175115189025280
Total114680454052615498930