*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002331633186
Feb231011511202141
Mar6303467003503
Apr181185488005624
May1193358309008763
Jun2984506897007645
Jul293432126002462
Aug62102063002135
Sep891831001848
Oct011729001730
Nov011500001501
Dec00683525713259
Total80610003510433685443797