*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002420552079
Feb01076457791558
Mar0281389001417
Apr8431412001463
May162585220002821
Jun222469237002728
Jul182621109001389
Aug551016001026
Sep1294100944
Oct0189100892
Nov0081100811
Dec00515519842504
Total705405930534481819632