*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002556105635
Feb022005421194130
Mar9143902003925
Apr34193853003906
May7412577020008351
Jun66373491030012903
Jul2312195077006319
Aug5133116003134
Sep293287003298
Oct022857002859
Nov002330002330
Dec001289738345130
Total213626943839361156361920