*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002120752096
Feb0470467641478
Mar1151688001704
Apr6732690002769
May1937291560005308
Jun6155963721009378
Jul6411184468005650
Aug7321706001745
Sep381712001723
Oct101131001132
Nov0078500785
Dec00428315311962
Total162105752059330437035730