*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002417561780
Feb034861462952
Mar06390400967
Apr08782800915
May42659123002786
Jun305980159006169
Jul181652950002620
Aug14742600447
Sep2765100660
Oct0084400844
Nov0181800819
Dec01403415131921
Total6810460659229373120880