*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan012718555601
Feb252696240522
Mar522763500714
Apr23610258100919
May1928350300778
Jun251136747001134
Jul22393961001277
Aug301444800492
Sep1443100436
Oct0046401465
Nov0016700167
Dec002372757996
Total98746554702615538501