*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0003716861723
Feb2165376241287
Mar6401054001100
Apr511287900996
May155212175005402
Jun56123603840012800
Jul4340032451006497
Aug13261490001529
Sep171172001180
Oct0083200832
Nov1060400605
Dec00303214271732
Total14221761999746373735683