*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002471473
Feb1341352179351
Mar013722700364
Apr022526900494
May111254183001448
Jun141843357002214
Jul9669471001149
Aug59237000467
Sep28635600444
Oct07022800298
Nov05018700237
Dec012820531625
Total4244722865411818564