*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001169170
Feb00110064174
Mar151419001425
Apr3181267001288
May33751306001414
Jun421311080001253
Jul31818800227
Aug5220200209
Sep0125500256
Oct0028200282
Nov0017900179
Dec00690382451
Total115240635716157328