*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00013233
Feb00811019
Mar00150015
Apr1247900482
May62905414003325
Jun564088446004590
Jul271671190001384
Aug1342700431
Sep0036200362
Oct0011500115
Nov00210021
Dec00180130148
Total9171653495217210925