*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0004634638
Feb002053244452
Mar0157100572
Apr0337600379
May227862100901
Jun0616959001575
Jul5274810001089
Aug5870300716
Sep0476900773
Oct0280800810
Nov0046000460
Dec001591756916
Total1211866441816349281