*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002811621190
Feb014237402833
Mar22082571002781
Apr158534718005586
May1301424010020015372
Jun3083114514790032932
Jul240657580060014821
Aug56553110003221
Sep6122253002271
Oct001086001086
Nov0029900299
Dec00173011461319
Total757530892512035271081711