*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00042416458
Feb0020320159382
Mar6927000285
Apr92436000393
May25371654001050
Jun4223801036003458
Jul2444339600863
Aug1829600305
Sep1844400453
Oct0137601378
Nov0024702249
Dec00167710241198
Total108324444496916029472