wb4: Started Fri Feb 15 18:08:09 AEDST 2013
MMYYYY = [112012]
112012 - billperiod = [Nov_2012]
gawk: wb4.awk:34: warning: escape sequence `\.' treated as plain `.'
2110112 blocks

real 21:59:36.07
user 14:35:51.08
sys   6:32:46.75