*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0006701707
Feb002141226441
Mar11333500349
Apr291632200367
May823438500501
Jun1737152600770
Jul1043366700804
Aug5960500619
Sep1049700498
Oct0030200302
Nov0029600296
Dec002033765971
Total39517643521016926625