*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan000517531758
Feb0355936241189
Mar2101184001196
Apr3101189001202
May3352227002265
Jun5342032002071
Jul1121382001395
Aug251020001027
Sep0182600827
Oct0157100572
Nov0046600466
Dec00317010501367
Total16111117738342715335