*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0009847856
Feb125184363888
Mar0201398001418
Apr6581314001378
May294268286004583
Jun91193345970020022
Jul4424901468004002
Aug10963300652
Sep0255300555
Oct0055300553
Nov0048700487
Dec0019009331123
Total18126183799713214336517