| Year | Net Profit % | Annual growth | Average growth |
| 2010 | 5.58% |
| 4.78% |
| 2011 | 5.80% | 3.94% | |
| 2012 | 5.94% | 24.14% | |
| 2013 | 3.02% | −41.16% | |
| 2014 | 3.55% | 17.55% |