*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan0001719091926
Feb0268726811372
Mar0212190002211
Apr0261755001781
May186269300773
Jun832050100604
Jul80746900556
Aug18234300363
Sep1022900230
Oct0023800238
Nov0083500835
Dec00454017662220
Total200140839419435613109