*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00003535
Feb00150621
Mar30700073
Apr18657900603
May4791312001368
Jun117221484001623
Jul34994400987
Aug1283700840
Sep5158000586
Oct0022400224
Nov00430043
Dec00904655
Total2254960970876458