*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001111
Feb000011
Mar20130015
Apr5470400713
May8331319001360
Jun13775926001138
Jul722042500517
Aug14343400451
Sep3139000394
Oct1141900421
Nov0013400134
Dec001304760
Total24213747770595215