*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003159162
Feb0160170132
Mar0013300133
Apr0210300105
May13283300362
Jun107892600825
Jul222435900585
Aug1224800251
Sep1221000213
Oct0012100121
Nov00820082
Dec00480297345
Total151348142345263316