*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005691696
Feb012101301513
Mar3853700548
Apr6758800601
May68011171001978
Jun1743753143007535
Jul1224982528005038
Aug6171118001141
Sep3454100548
Oct4041200416
Nov0031300313
Dec001280660788
Total577711106896165220115