*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001320712084
Feb47798128511672
Mar102552038002195
Apr3481111684002143
May323871850002260
Jun3441532203002700
Jul322822339002743
Aug33221479001534
Sep271375001384
Oct101305001306
Nov0068000680
Dec00550215722124
Total14795241630127449422825