*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan1128000120
Feb281028057
Mar00045146
Apr00082486
May00216332197
Jun00813432991650
Jul001535143409
Aug0011125118
Sep0011345140
Oct00047047
Nov00046046
Dec60220300634
Total742112723813893550