*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003351645197
Feb832916892018383659
Mar613683619004300
Apr903982436003437
May811702794003675
Jun568922552003212
Jul209332446002688
Aug72111722001805
Sep931293001305
Oct231686001691
Nov222040002044
Dec101241629924240
Total32734092351859999437253