*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001610521068
Feb013757402785
Mar1232310002334
Apr4814673004758
May91125919690013651
Jun2563053513700032161
Jul224658078080014612
Aug54533004003111
Sep5112151002167
Oct001073001073
Nov0029100291
Dec00173011461319
Total635498752419723260077330