*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001515
Feb0050510
Mar2381090001130
Apr171122758002887
May1021993494003795
Jun1221843002003308
Jul62651654001781
Aug16271367001410
Sep3597700985
Oct1053500536
Nov0013600136
Dec011903757
Total3256311503705716050