<select type="text" class="form-control_2" name="years" id="years" >

                <?php

                $year = date('Y',time());

                for($iadd=2005;$iadd<=2030;$iadd++){

                    if($year == $iadd){

                        $selected="selected";

                    }else{

                        $selected="";

                    }

                    echo "<option value='".$iadd."' ".$selected." >".$iadd."</option>";

                }

                ?>

        </select>