*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb000011
Mar20110013
Apr5265600663
May5331437001475
Jun131741040001245
Jul722047300565
Aug12352000535
Sep4045800462
Oct1146200464
Nov0016200162
Dec001605167
Total23213352350625662