*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004408412
Feb001201171292
Mar0433300337
Apr4221129001155
May3561231262007420
Jun58979572950017148
Jul4114674712006220
Aug14363215003265
Sep221748001752
Oct0026700267
Nov0012400124
Dec00751547623
Total15417449202806112639015