*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000522012206
Feb0372937741509
Mar2101463001475
Apr3121493001508
May3492879002931
Jun5392608002652
Jul1151784001800
Aug2111559001572
Sep011268001269
Oct0183500836
Nov0067600676
Dec00476015031979
Total16141157708447820413