*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan13124010156
Feb4550760126
Mar0001321133
Apr00329456353
May00815744712053
Jun0039390011095048
Jul003719227542713
Aug00232223347
Sep0022756283
Oct0001570157
Nov00079079
Dec36730480418
Total54332918780242011866