*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000011
Feb012014
Mar113580072
Apr229731817002119
May349813096003526
Jun4121463277003835
Jul633473190003870
Aug196322780003008
Sep36131451001500
Oct3016300166
Nov00160016
Dec003047
Total1869396158530618124