*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004616631709
Feb0060176621270
Mar0621203001265
Apr31961236001435
May227503224007749
Jun44165874820017113
Jul2350462801007870
Aug9251948001982
Sep371539001549
Oct0293000932
Nov0062400624
Dec10278214451726
Total105294281186655377045224