*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004117531794
Feb0378125651351
Mar0232143002166
Apr2261555001583
May206261700699
Jun832046200565
Jul74641300493
Aug17228300302
Sep1019700198
Oct0025200252
Nov0072000720
Dec00347014321779
Total197142777043375011902