| | | | | | | | | | | 2011 | | | 2013 | | | | | | | 6% 7% | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xxx xxx | | | | | xxx | | | | | | | | xxx | | | | | | | | | | |