*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001400401
Feb001010126227
Mar7559400606
Apr1212038002060
May10861517001613
Jun18921007001117
Jul31925100291
Aug7747200486
Sep0156800569
Oct0061000610
Nov0032800328
Dec00981610709
Total742217584211369017