*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0012912121242
Feb003389302649
Mar05588700942
Apr32561395001654
May112518739003268
Jun2828913214006133
Jul2918875800975
Aug10235000362
Sep2545800465
Oct1150700509
Nov0238200384
Dec00207512021414
Total845918923643271617997