*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00016671687
Feb002383280521
Mar0369300696
Apr5552099002159
May3177791283009093
Jun58918872250016471
Jul459405938006923
Aug16434645004704
Sep322812002817
Oct0064800648
Nov0041900419
Dec002118618837
Total158180102621127156945975