*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000110011
1970000202
1971000000
1972000000
1973000000
1974000011
1975000022
1976000000
1977000202
1978000000
19790005813
198000231318
1981000101
1982000303
1983000101
1984000000
1985000101
1986000213
1987000000
1988001326
19890009514
199000351018
19910058417
1992000347
19930016411
199400082129
19950059189203
199600443442
19970017312320
19980026105113
1999004206185
20000031683102
20010046269279
200200023260283
2003002021343384
200400932435476
200500425246275
2006001319305337
2007001741593651
200800738344389
200900739172218
201000843683734
201100260711773
201200860793861
201300115132148
2014000384987
2015000241034
2016000606
2017000000
2018000000
Total0013262462046960