*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000000
Feb000000
Mar016007
Apr0148900103
May3103354670010805
Jun56229245020023482
Jul115649238580010465
Aug64192234002317
Sep011205001206
Oct0012100121
Nov008008
Dec002046
Total2383978684920448520