*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000077
Feb004037
Mar0125900260
Apr132133002137
May4103303003317
Jun2363832003870
Jul4452720002769
Aug221941001945
Sep011909001910
Oct0011000110
Nov005005
Dec00201012
Total13981621802016349