*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000033
Feb001001
Mar0190010
Apr1124000242
May21261343001606
Jun21272293002836
Jul35964999001998
Aug16547900500
Sep131118001122
Oct0136000361
Nov10150016
Dec00121417
Total77495836582178712