*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006265271
Feb0041082123
Mar0210700109
Apr2791009001090
May112764552003327
Jun1230352366005413
Jul121391278001429
Aug4379600803
Sep1446400469
Oct0141700418
Nov0012700127
Dec00713567641
Total4260277228991414220