*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008668676
Feb001782196376
Mar72335500385
Apr61235400372
May3854617300757
Jun109893144001146
Jul127154859001140
Aug343872500797
Sep10458900603
Oct0034800348
Nov0023200232
Dec0016029671129
Total331167041171218317961