*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001374375
Feb01930133227
Mar0642800434
Apr13577400810
May132556800606
Jun392032100380
Jul30717200209
Aug5022200227
Sep1023500236
Oct0035900359
Nov0038300383
Dec00940460554
Total8994364919674800