*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003754757
Feb001971244442
Mar2438700393
Apr14562504002574
May241444414004582
Jun583444996005398
Jul931212715002929
Aug28202041002089
Sep2111940001953
Oct0048000480
Nov0033100331
Dec0024718561104
Total221700202525185423032