*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002481483
Feb001021133236
Mar0018400184
Apr0214100143
May3883164001050
Jun425341555005938
Jul385143847004399
Aug37462729002812
Sep731155001165
Oct0130400305
Nov0015600156
Dec00890629718
Total127679094263124317589