*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003158161
Feb0156170128
Mar0012900129
Apr0210300105
May13283300362
Jun107902600826
Jul222435200578
Aug1224100244
Sep1220700210
Oct0011900119
Nov00830083
Dec00480296344
Total151349139745243289