*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000033
Feb00220325
Mar8541429001491
Apr171092411002537
May863652389004127
Jun1936774446007413
Jul13011251918003173
Aug33121027001072
Sep321111001116
Oct0045200452
Nov00160016
Dec00101011
Total47011728922201621436