*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0240120126
Feb002212447
Mar41176110120
Apr1103727000417
May1242456700715
Jun12249951001122
Jul712160100693
Aug17742300447
Sep0021000210
Oct00580058
Nov00360137
Dec10330534568
Total486157323626794560