*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000077
Feb004037
Mar0125800259
Apr132130002134
May4103312003326
Jun2363834003872
Jul4452727002776
Aug222007002011
Sep011954001955
Oct0010900109
Nov004004
Dec00201012
Total13981634102016472