*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0008665673
Feb001782196376
Mar72335500385
Apr61235400372
May3854517300756
Jun109892144001145
Jul127153859001139
Aug343872500797
Sep10458900603
Oct0034800348
Nov0023200232
Dec0016029641126
Total331166741171218257952