*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0013930173057
Feb71490859311865
Mar82802553002715
Apr244883611003943
May1861134695004994
Jun2043656170006739
Jul1191684005004292
Aug15202588002623
Sep6102471002487
Oct011536001537
Nov1092200923
Dec105961016412248
Total8658593005654558937423