*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00027178205
Feb0065338106
Mar00870087
Apr06680074
May311127800392
Jun2219744300662
Jul1310918000302
Aug5313600144
Sep0013300133
Oct00650065
Nov00750075
Dec00643832899
Total4342615943310483144