my $rows = $sth->fetchall_arrayref({});

$_->{nw} = addComma( $_->{nw} )
    for @$rows;

$tmpl->param( items => $rows );

## Suitable for:
##
##     <tmpl_loop items>
##         <tmpl_var name>
##         <tmpl_var nw>
##         <tmpl_var number>
##     </tmpl_loop items>