*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197021015027
1970100102
1971400004
1972100102
1973300104
1974100214
19755005111
1976300126
19775006314
1978300249
197950211624
19805007113
198170011018
198270116024
19830009211
19847003010
19854005312
19865009216
198712009627
1988110013428
198981011626
1990503231647
19916012251053
199290026944
19931204291156
19941307462389
199570431648
19965012302370
19971207482188
1998702391058
199990332852
200080335450
2001110838562
2002100261376
2003100359375
200490440659
2005160258076
200690156268
2007110163681
200870085092
20093041142123
20102041733182
20116122077223
201213001172132
20130011022105
201400125733
201510012013
2016000303
2017000000
2018000000
Total31929417052302350