I have this dropdown, All I want is to pass the selected dropdown value on controller method directly.

This is my code for my dropdown.

 <form method="POST" >          
<select name="year" id="year">
               <option disabled selected name="years" value="100">--Select Year--</option>
                    <?php 
                       $start = "2017";
                       $end = (int)date("Y");                
                         for($i=$start; $i<=$end; $i++){                  
                            echo '<option class="dropdown-item" value='.$i.'>'.$i.'</option>';
                         }
                   ?>                          
              </select>                  
        </form>

This is my code for my method in my controller.

 public function resolution_time_of_calls(){ 

            //Declarations              
            $arr_val = array();
            $arr_val1 = array();
            $arr_val2 = array();
            $arr_monthname = array();
            $arr_monthInt = array();        
           
            //SELECTING MONTHS  
            $quer = DB::select("SELECT MONTH(DATE_ADD(T.Created, INTERVAL 8 HOUR)) AS MonthInt
                    ,monthname(DATE_ADD(T.Created, INTERVAL 8 HOUR)) AS Month
                    ,year(DATE_ADD(T.Created, INTERVAL 8 HOUR)) AS Year               
                    FROM rtdb.Tickets T
                    LEFT JOIN rtdb.ObjectCustomFieldValues O ON O.ObjectId=T.EffectiveId 
                    AND O.CustomField=15 AND O.ObjectType='RT::Ticket' AND O.Disabled=0
                    WHERE T.Status!='Deleted' AND T.IsMerged IS NULL AND T.Type='ticket'
                    AND year(DATE_ADD(T.Created, INTERVAL 8 HOUR))= 2018
                    GROUP BY Month,MonthInt,Year Order by MonthInt asc
                ");   

                $chart = new SampleChart;                            
                $chart->title('Resolution Time of Calls');                 
                foreach($quer as $query){
                    array_push($arr_monthname, $query->Month.", ".$query->Year);  
                    array_push($arr_monthInt, $query->MonthInt);   
                }                     
                $chart->labels($arr_monthname); 


            ///////////////////// TOTAL, AVERAGE,MAXIMUM Query  ////////////////////                             
                    foreach($arr_monthInt as $month){
                        $sql = DB::select("SELECT MONTH(DATE_ADD(T.Created, INTERVAL 8 HOUR)) AS MonthInt                     
                            ,AVG(TIMESTAMPDIFF(HOUR,T.Created,O.Created)) AS AVG   
                            ,MAX(TIMESTAMPDIFF(HOUR,T.Created,O.Created)) AS MAX               
                            FROM rtdb.Tickets T
                            LEFT JOIN rtdb.ObjectCustomFieldValues O ON O.ObjectId=T.EffectiveId 
                            AND O.CustomField=15 AND O.ObjectType='RT::Ticket' AND O.Disabled=0
                            WHERE T.Status!='Deleted' AND T.IsMerged IS NULL AND T.Type='ticket'
                            AND year(DATE_ADD(T.Created, INTERVAL 8 HOUR))= 2018                    
                            GROUP BY MonthInt Order by MonthInt asc
                            ");
                    }
                    foreach($sql as $value){
                        
                        array_push($arr_val1, $value->AVG );
                        array_push($arr_val2, $value->MAX );
                    }

                    $chart->dataset('Average Hours', 'bar', $arr_val1)->backgroundcolor('#00833E');   
                    $chart->dataset('Maximum Hours', 'bar', $arr_val2)->backgroundcolor('#AF1D2D');   
                    $chart->height(600);

             return view('resolution_time_of_calls',['chart'=>$chart]);
    }