*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002556105635
Feb022005421194130
Mar9143901003924
Apr34193853003906
May7412577016008347
Jun66373491010012901
Jul2312195074006316
Aug5133114003132
Sep293281003292
Oct022856002858
Nov002329002329
Dec001289738345130
Total213626943819361156361900