*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan18813000201
Feb5811831144
Mar00094195
Apr0011421144
May00425928291
Jun0012786192990
Jul001025030290
Aug0021769187
Sep0031415149
Oct00083083
Nov0001040104
Dec66640690739
Total912183321872673417