กรุณาช่วยดูให้ผมที่ครับผู้รู้ ผมต้องการแสดงข้อมูลเกรดแบบตาราง ให้แบ่งเป็นแต่ละภาคเรียนการศึกษา

                <?
	
	$hostname="localhost";
	$user="root";
	$password="1234";
	$dname="support";
	mysql_connect($hostname,$user,$password)or die("can't connect DB");	
	mysql_select_db($dname)or die("can't connect DB");	
	mysql_query("SET NAMES UTF8");

	$sql = "select * from grade where $search like '%$search_textbox%' and Teacher_Id='$_SESSION[ssUserID]' ORDER BY `grade`.`year` ASC";
	$dbquery = mysql_db_query("support",$sql);	
	$num_rows = mysql_numrows($dbquery);
?>	

<?	
    
    $rowNo = 0;
	while ($result = mysql_fetch_array($dbquery)) {
		
		$id_subject = $result[id_subject];
		$subject = $result[subject];
		$Teacher_Id = $result[Teacher_Id];
		$Teacher_Name = $result[Teacher_Name];
		$Student_Id = $result[Student_Id];
		$Stu_Name = $result[Stu_Name];
		$Section_Id = $result[Section_Id];
		$CR = $result[CR];
		$gp = $result[gp];
		$term = $result[term];
		$year = $result[year];
		$t_y = $result[t_y];
?>
  <table width="812" border="1" cellpadding="0" cellspacing="0">

       <tr>
      <td colspan="8" align="left" bgcolor="#99CCFF"><div align="center">ภาคการศึกษาที่ <?php echo $t_y; ?><? $rowNo++ ?> </div></td>
      </tr>
    <tr>
      <td width="94" align="left" bgcolor="#99CCFF"><div align="center">รหัสวิชา</div></td>
      <td width="556" align="left" bgcolor="#99CCFF"> <div align="center">ชื่อรายวิชา</div></td>
      <td width="82" align="left" bgcolor="#99CCFF"><div align="center">หน่วยกิต</div></td>
      <td width="70" align="left" bgcolor="#99CCFF"><div align="center">เกรด</div></td>
    </tr>

    <tr height="22" valign="middle" bgcolor="#FFCC99">
      <td width="94" align="left" bgcolor="#FFCC99"><div align="center"><?php echo $id_subject ?></div></td>
      <td width="556" align="left" bgcolor="#FFCC99"> <div align="center"><?php echo $subject ?></div></td>
      <td width="82" align="left" bgcolor="#FFCC99"><div align="center"><?php echo $CR ?></div></td>
      <td width="70" align="left" bgcolor="#FFCC99"><div align="center"><?php echo $gp ?></div></td>
    </tr>
<?
	}
   mysql_close();	
?> 
  </table>