*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0007233240
Feb002405175
Mar04530057
Apr225970400965
May102568570003148
Jun1431212406005541
Jul111371179001327
Aug4246000466
Sep1427900284
Oct0126000261
Nov00680068
Dec00423535580
Total42609660451081913012