*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00027763790
Feb023474312665
Mar3751482001560
Apr52331853002091
May175991152006160
Jun79185542760018909
Jul47794523530010345
Aug261894000984
Sep161096001103
Oct0194700948
Nov0038400384
Dec011561739897
Total17832826998632181444836