*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0002331723195
Feb231133511192262
Mar6303510003546
Apr181185536005672
May1193328369008820
Jun2984506924007672
Jul293432141002477
Aug62102112002184
Sep891896001913
Oct011792001793
Nov011553001554
Dec00700525703275
Total8069973566633686144363