*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb001034
Mar016007
Apr019037300563
May6101694400010615
Jun11197222810020014
Jul3470502051009135
Aug1261146001164
Sep041956001960
Oct2360000605
Nov01150016
Dec001003646
Total6537146687904944139