*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan74600080
Feb261023050
Mar00140243
Apr001039620426
May00769784788
Jun001616082891913
Jul0044569101714
Aug001232314349
Sep0002608268
Oct00071071
Nov00035035
Dec37810320411
Total47889040545185148