*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005649654
Feb0115371368917
Mar12552265002521
Apr18663761004628
May178898956009871
Jun901419212310015513
Jul7011133682004865
Aug49988001001
Sep1558500591
Oct0042000420
Nov0012300123
Dec00770640717
Total18425349146256165741821