*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001033783388
Feb27923511612098
Mar70642742002876
Apr239804055004374
May2421015415005758
Jun2353757152007762
Jul1261674679004972
Aug27203339003386
Sep6103295003311
Oct212015002018
Nov101272001273
Dec108301022683109
Total9518253571725680744325