*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197052110018
1970003003
1971020002
1972010001
1973002002
1974001001
197511520018
1976023005
1977009009
1978006006
19790660012
19800370010
1981005005
1982016007
1983017008
1984013004
1985013004
1986072009
1987113005
1988112150028
1989113160030
199022690037
199181040022
19920790016
1993125220048
1994046290075
199511111100123
1996657160079
199705771400591
199844073700448
199914522400477
200004491700466
20011332900342
200205394600585
200317543900794
200405755100626
200534856600554
2006659512400725
200734945200549
200823125900373
200923979800497
201034476900519
2011448712700618
20127852160001019
2013135712300481
201403223600358
201503634400407
2016148110300585
201713658500451
201834246900496
201912795700337
2020539316200560
202133718100455
202202778600363
2023000000
Total791213620480014263