*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000011
Feb012014
Mar113580072
Apr222731786002081
May346813090003517
Jun4101463271003827
Jul629473186003862
Aug192322783003007
Sep36131448001497
Oct3016300166
Nov00160016
Dec003047
Total1849396158060618057