*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970002114
1970000404
1971000000
1972000000
1973000000
1974000000
1975000213
1976002305
1977000707
1978000303
1979000415
1980000404
1981000202
1982000707
1983000202
1984000404
1985000213
1986000639
1987000628
19880008412
198900171018
1990000173754
1991004151029
1992003171232
19930062771104
199400123584131
1995009244174
19960018184278
1997001328158199
199800826159193
19990061798121
200000732129168
20010093094133
20020035388144
200300442147193
200400745217269
2005001054116180
200600798125230
20070067792175
200800912954192
2009002111868207
2010002122038279
2011002320431258
201200366856160
201300119135137
201400963476
2015001428446
2016000033
2017000000
2018000000
Total00281164820363965