*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00016770786
Feb012100240451
Mar02778100808
Apr4622120002186
May17852802002904
Jun222873438003747
Jul19681467001554
Aug981075001092
Sep361287001296
Oct1284900852
Nov0045600456
Dec0022929441175
Total755461471418195417307