laravel display zero if grouping status doesn't exist in result set

Hi everyone here is my query for fetching the data of statuses

$all_statuses =array(1,2,3,4,5,6,7,8);

        $all_open_wo = WorkOrders::selectRaw('count(*) AS cnt, wo_status')
        ->whereIn('wo_status', $all_statuses)
        ->groupBy('wo_status')    
        ->orderBy('wo_status', 'asc')  
        ->get();

I have got the sum of every status of the element in $all_statuses array. As you can see there are 8 elements in this array and currently in my table only 6 statuses exist. So I get only the sum of rows with those 6 statuses. Can I get "0" for the sum of those statuses which are not existing in the table ?

Thanks

via Chebli Mohamed