*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002364366
Feb00113091204
Mar01044900459
Apr0191755001774
May61303253003389
Jun662202982003268
Jul922060700719
Aug21341800442
Sep1246500468
Oct0059700597
Nov0034600346
Dec001200470590
Total18640411105292512622