my data expired need php help

the drop down expired in 2010 its time to change it help me please its set to 2006-2010 now i need 2012-2016 thank you

<tr class="FormText">
        <td>Start Date:
 </td>
        <td><select name="startday"><option value=""></option>
          <? for ($i = 1; $i <= 31; $i++){
		  echo "<option value=\"$i\">$i</option>\n";		  
		  }?>
        </select>
          <select name="startmonth"><option value=""></option>
            <? for ($i = 1; $i <= 12; $i++){
			$monthname = date('F', mktime(12, 0, 0, $i, 1, 2005)); 

			echo "<option value=\"$i\">$monthname</option>";
			}?>
          </select>
          <select name="startyear"><option value=""></option>
            <? for ($i = 2006; $i <= 2010; $i++){

			echo "<option value=\"$i\">$i</option>";
			}?>
          </select></td>
      </tr>
      <tr class="FormText">
        <td>End Date: </td>
        <td><select name="endday"><option value=""></option>
           <? for ($i = 1; $i <= 31; $i++){
		  echo "<option value=\"$i\">$i</option>\n";		  
		  }?>
        </select>
          <select name="endmonth"><option value=""></option>
           <? for ($i = 1; $i <= 12; $i++){
			$monthname = date('F', mktime(12, 0, 0, $i, 1, 2005)); 
			echo "<option value=\"$i\">$monthname</option>";
			}?>
          </select>
          <select name="endyear"><option value=""></option>
            <? for ($i = 2006; $i <= 2010; $i++){
			echo "<option value=\"$i\">$i</option>";
			}?>
          </select></td>
  </tr>
  <tr>
    <td class="FormText">Status:</td>
    <td><select name="featuredstatus" id="featuredstatus">
      <option value="0">Inactive</option>
      <option value="1" selected>Active</option>
    </select></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td><input type="submit" name="Submit" value="Add Plug"></td>
  </tr></form>

Code (markup):

 

Here you go.

<tr class="FormText">
        <td>Start Date:
 </td>
        <td><select name="startday"><option value=""></option>
          <? for ($i = 1; $i <= 31; $i++){
		  echo "<option value=\"$i\">$i</option>\n";		  
		  }?>
        </select>
          <select name="startmonth"><option value=""></option>
            <? for ($i = 1; $i <= 12; $i++){
			$monthname = date('F', mktime(12, 0, 0, $i, 1, 2005)); 

			echo "<option value=\"$i\">$monthname</option>";
			}?>
          </select>
          <select name="startyear"><option value=""></option>
            <? for ($i = 2012; $i <= 2016; $i++){

			echo "<option value=\"$i\">$i</option>";
			}?>
          </select></td>
      </tr>
      <tr class="FormText">
        <td>End Date: </td>
        <td><select name="endday"><option value=""></option>
           <? for ($i = 1; $i <= 31; $i++){
		  echo "<option value=\"$i\">$i</option>\n";		  
		  }?>
        </select>
          <select name="endmonth"><option value=""></option>
           <? for ($i = 1; $i <= 12; $i++){
			$monthname = date('F', mktime(12, 0, 0, $i, 1, 2005)); 
			echo "<option value=\"$i\">$monthname</option>";
			}?>
          </select>
          <select name="endyear"><option value=""></option>
            <? for ($i = 2012; $i <= 2016; $i++){
			echo "<option value=\"$i\">$i</option>";
			}?>
          </select></td>
  </tr>
  <tr>
    <td class="FormText">Status:</td>
    <td><select name="featuredstatus" id="featuredstatus">
      <option value="0">Inactive</option>
      <option value="1" selected>Active</option>
    </select></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td><input type="submit" name="Submit" value="Add Plug"></td>
  </tr></form>

Code (markup):

 

i modified it like that yesterday but it just switches it back down to 2010