*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002811631191
Feb014277402837
Mar22082609002819
Apr158544756005625
May1261424110310015398
Jun3073114514940032946
Jul241657580290014845
Aug57553120003232
Sep6122257002275
Oct001087001087
Nov0029900299
Dec00173011461319
Total754530912528235271181873