*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0000108108
Feb001702239
Mar01470048
Apr1123200234
May41650600526
Jun256450500594
Jul331134000384
Aug14845300475
Sep1047900480
Oct0051000510
Nov0017000170
Dec00460197243
Total78101330503273811