foreach my &#36key (keys %stats)
{
    foreach my &#36subkey (keys %{&#36stats{&#36key}})
    {
        foreach my &#36sub2key (keys %{&#36stats{&#36key}{&#36subkey}})
        {
            print "&#36key => &#36subkey => &#36sub2key: " . &#36stats{&#36key}{&#36subkey}{&#36sub2key} . "\n";
        }
    }
}