*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001616801696
Feb0277537551535
Mar4132795002812
Apr8313125003164
May695152545005766
Jun1017681673008455
Jul304312346002807
Aug351431001439
Sep081488001496
Oct011330001331
Nov0062500625
Dec00329215571888
Total215133241546221399233014