*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000776776
Feb101721209383
Mar872955800674
Apr196501602001848
May231282803003062
Jun183613442003686
Jul96262340002462
Aug19131857001889
Sep021150001152
Oct0037700377
Nov0025700257
Dec0015508701025
Total813209147131185517591