*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000237237
Feb0162187151
Mar0112500126
Apr01047500485
May152377100809
Jun133156600610
Jul233643200491
Aug13846700488
Sep0072100721
Oct0020100201
Nov00910091
Dec10592354416
Total65110397036784826