*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0009257985890
Feb1719442218263800
Mar10273801003838
Apr19373762003818
May583925841006291
Jun10524246322008851
Jul394553187003681
Aug292032002043
Sep0102595002605
Oct012753002754
Nov002106002106
Dec011080632834370
Total2343363354231201090750047