*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002208210
Feb005204496
Mar171384001392
Apr8442683002735
May564805785005646
Jun14763092731009187
Jul817152667003463
Aug17191887001923
Sep251274001281
Oct1039900400
Nov0014600146
Dec00791596676
Total3131190414087384827155