*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001033743384
Feb371029511612205
Mar71642760002895
Apr234784072004384
May199955415005709
Jun2183697123007710
Jul1261664686004978
Aug27203392003439
Sep6103359003375
Oct112061002063
Nov101304001305
Dec108511022613123
Total8878103605225679644570