*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002418051829
Feb0060878071422
Mar071305001312
Apr3231474001500
May227826217008065
Jun43178894320018364
Jul2355572861008441
Aug13262616002655
Sep372122002132
Oct021217001219
Nov0079800798
Dec10370217742147
Total108313371402033438649884