foreach (reverse sort keys %list) {
<table>
<tr><td>1.1.04</td><td>first record</td></tr>
<tr><td>1.21.04</td><td>next record, same month</td></tr>
</table>

<table>
<tr><td>2.13.04</td><td>New table becuse it's a new month</td></tr>
</table>
}