                                                               
                    2.6         19%                 85%               70%             20     40                   80%                                      80%                                      
                     2010    18            30.6%    12.0%                                2012  2013               21.46%                                                        
              2011        2300            1                                                                   2010      5        3.6%      9.9%               8.0%  20.3%                               A                    90%                                 
                                                                                                2200  2300            50%        30%            78           45%         