通过会话将表单输入数据传递给另一个表单

Question

i am new in laravel, i want to do a step by step form filling, i want to pass data from one form to the other through session

form one:

<form action="{{URL::route('addUser')}}" method="post" class="form-horizontal">            
   <select  name="year">
     <option>Select</option>
     {{$options}}
  </select>             
 <button type="submit" class="btn btn-success"></button>
</form>

form two

<form action="{{URL::route('addUser')}}" method="post" class="form-horizontal">
    <input type="text" name="check_number" />
</form>

my routes

Route::get('/admin/addUser',array('uses'=>'UserController@addUser','as'=>'addUser'));
Route::post('/admin/addUser',array('uses'=>'UserController@postUser'))->before('csrf');

i just want to pass a year input value to the next page and use it there

how can i do this?