*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan66500172
Feb230125049
Mar00139242
Apr00339446
May0061378831026
Jun00941342994721
Jul00540024402845
Aug0021037112
Sep00128332
Oct00125026
Nov00023023
Dec30500210326
Total394529125376399320