*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002515221547
Feb1256576241199
Mar48992001004
Apr31687000889
May105087171005268
Jun46126893460013081
Jul3441712347006552
Aug12251424001461
Sep161120001127
Oct0077400774
Nov0157500576
Dec00303214291734
Total11122005948734357535212