*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19701172103877
1970008019
19710420410
1972001001
1973015028
1974014027
197513150340
19760440715
197701220427
197803110317
197909220435
198019120022
19810280818
198204100519
198303120116
19840370212
19850490114
198606130423
198701280736
1988012150734
19890122701150
1990057220483
1991139270572
1992132250765
199371593602204
199433997601479
1995116155703686
199662816501353
19977189750041958
199813140575051498
19991117554041234
200051617491131685
20012166853091732
200221952162022118
200372508124022641
200422787160052954
200541859446072316
200652323458042790
200732145204032355
200881232309031552
200961383415051809
201091790498012298
201121099530071638
2012621937640122975
201371954653092623
201441842488042338
2015419168000162736
2016519669970232991
201713275613710104150
20181025011073083592
201911266512160133905
20205258216740144275
20212282814610284319
20224297518840114874
20233336561182084879
202422393716830315673
202512290133
Total2456231219416139982373