*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000522012206
Feb0372937741509
Mar2101463001475
Apr3101481001494
May3402874002917
Jun5392607002651
Jul1151782001798
Aug2111556001569
Sep011265001266
Oct0183500836
Nov0067600676
Dec00476015031979
Total16130157448447820376