*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970202802454
1970014038
1971104049
1972103059
1973002046
1974005038
19750170412
19761070614
197710110517
197800180826
197990200635
198018360532
1981222201339
1982811801138
1983162160943
198413860532
19850150410
1986122401239
1987062921855
1988243701356
1989283601561
1990293745013124
1991193069012130
199211891013123
19931217191021241
19941555303019392
1995917241024291
1996935213018275
19971239190023264
1998961223018311
19991131124021187
2000640247029322
20012413275023335
2002105289018322
20032916326020391
20042310333016382
20051511269025320
20062818342032420
200723213671236459
200835424381030555
20092623556049654
20103923572045679
20113316701162813
2012511987701211068
20134435132031771579
201468107138622341797
201515350170923712285
201614526211254902778
201712049279125423504
20188336308955783791
20196141329555403942
20206124358626264299
20214723375406094433
20225523265445523288
202391580775
202411140420
Total140210423335855559541452