*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00027309336
Feb362589131407
Mar61760200625
Apr97561001001154
May2811321710002123
Jun2051391033001377
Jul602148400565
Aug3234300348
Sep5338100389
Oct0028000280
Nov0026900269
Dec001381763902
Total66037664993712038775