*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002556105635
Feb022004421154125
Mar9143901003924
Apr34193848003901
May7112567009008336
Jun60373490900012884
Jul2312195073006315
Aug5133114003132
Sep293281003292
Oct022856002858
Nov002328002328
Dec001289738345130
Total204626843793361155961860