$query="SELECT * FROM figures";
$result=mysql_query($query);
$row=mysql_fetch_array($result);

$jen_year_total=0;
while($row=mysql_fetch_array($result)) {
for ($i = 1; $i <= 12; $i++) {
$jen_year_total += $row["blah_$i"];
echo $row["blah_$i"];
}
}
echo $jen_year_total;