*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002556105635
Feb022005421194130
Mar9143902003925
Apr34203857003911
May7412647037008375
Jun66373491080012908
Jul2312195082006324
Aug5133116003134
Sep293287003298
Oct022857002859
Nov002330002330
Dec001289738345130
Total213627743870361156361959