*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00002323
Feb002057
Mar00130013
Apr17730081
May7530496001033
Jun4042921032005364
Jul29629350001008
Aug3618100190
Sep2813700147
Oct00240024
Nov000000
Dec0080190198
Total825472231602188088