*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan12313000136
Feb432037183
Mar00079887
Apr00016871239
May00032812611589
Jun001839242494659
Jul001726113661644
Aug00519915219
Sep0011238132
Oct00072173
Nov00040040
Dec64550450695
Total8112041174469809596