*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000521832188
Feb0363737691412
Mar2101421001433
Apr3121471001486
May3492828002880
Jun5392559002603
Jul1151759001775
Aug2111503001516
Sep011188001189
Oct0180500806
Nov0064500645
Dec00456015011957
Total16141152728445319890