*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0007227234
Feb0080366149
Mar01313700150
Apr09329800391
May72723261002991
Jun72871285003163
Jul25473750001248
Aug96649800600
Sep1135700359
Oct0021500215
Nov0010700107
Dec00621580643
Total136618030501187310250