*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00012782794
Feb034964328831
Mar0581226001284
Apr71591047001213
May303758277004065
Jun87177605950018442
Jul4122161365003622
Aug9946500483
Sep0241900421
Oct0042500425
Nov0033400334
Dec001420832974
Total17423965679116194232888