*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005649654
Feb0115371368917
Mar12552249002505
Apr18663760004627
May178898956009871
Jun901419212310015513
Jul7011133682004865
Aug49988001001
Sep1558500591
Oct0042000420
Nov0012300123
Dec00770640717
Total18425349146086165741804