*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004635639
Feb002083249460
Mar0157500576
Apr0337700380
May227862100901
Jun0616959001575
Jul5274810001089
Aug5870400717
Sep0476900773
Oct0280800810
Nov0046000460
Dec001591757917
Total1211866450816419297