*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000000
1970000000
1971000000
1972000000
1973000000
1974030003
1975030014
1976020013
1977022026
1978021003
1979023016
1980001001
1981002013
1982001034
1983002024
1984001045
1985122027
19861160412
19871380517
19880150511
19891251413
19900530715
199155130326
199213180729
199318120627
199479160638
19956890528
199671140224
199731140523
199829210335
199929220437
200035180430
200141190832
200241190125
200328210233
200435100523
200545220738
200657320852
200787360960
200832490559
200945630577
201049790395
201131560363
201231410752
201321530056
201410220023
201500190120
2016002002
2017000000
Total9113974211511124