*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan17822010201
Feb68160810165
Mar0001852187
Apr0052567268
May00147184081140
Jun001967918802578
Jul0012350458820
Aug0032321236
Sep0001862188
Oct1001310132
Nov00068068
Dec55130610615
Total7984153294827586598