*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000404
1970000000
1971000000
1972000101
1973000000
1974000101
1975000000
1976000404
1977000000
1978000000
1979000123
1980000303
1981000101
1982000112
1983000000
1984000000
1985001326
1986000415
198700012113
1988002428
19890006713
1990000141024
19910077620
19920018514
19930016411
1994001102334
1995002141127
1996003132440
1997000116172
1998002136176
1999002167088
2000001246388
2001001135670
200200038121159
20030014396140
200400025111136
2005001316597
20060004190131
200700125105131
2008001374987
20090009382175
20100005452106
20110006759126
201200069100169
2013000313970
2014001214567
201500015924
2016000000
2017000202
2018000000
Total002978614332248