*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0005957962
Feb002393340582
Mar110156400666
Apr44844300495
May141060792001866
Jun2329781194004195
Jul817181668003394
Aug1161751001768
Sep021259001261
Oct0084300843
Nov0049000490
Dec0021329891204
Total515923945610228617726