or download this
my %G01totals = (
'01' => 0, '02' => 0, '03' => 0, '04' => 0, '05' => 0, '06' => 0,
+'07' => 0,
...
'08' => 0, '09' => 0, '10' => 0, '11' => 0, '12' => 0, '13' => 0,
+'14' => 0,
'15' => 0, '16' => 0, '17' => 0, '18' => 0, '19' => 0, '20' => 0,
+'21' => 0,
);