*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan12912000141
Feb210025147
Mar00037037
Apr0011145120
May004238103345
Jun005442123570
Jul00423248284
Aug00628213301
Sep0022297238
Oct00173276
Nov00051051
Dec64310510695
Total793132317743022905