*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002556105635
Feb022003421154124
Mar9143898003921
Apr34193845003898
May7112567009008336
Jun60373490900012884
Jul2312195074006316
Aug5133113003131
Sep293281003292
Oct022857002859
Nov002327002327
Dec001289738345130
Total204626843786361155961853