*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005578583
Feb011651247414
Mar3847000481
Apr6749300506
May6810969001785
Jun1544112486006912
Jul1125172087004615
Aug51373400752
Sep3437700384
Oct4028500289
Nov0025900259
Dec001140616730
Total53777184396144117710