| Year | Aged over 60 (%) | Aged over 65 (%) | The elderly dependency ratio (%) |
| 2000 | 10.2 | 7.0 | 9.9 |
| 2010 | 13.3 | 8.9 | 11.9 |
| 2011 | 13.7 | 9.1 | 12.3 |
| 2012 | 14.3 | 9.4 | 12.7 |
| 2013 | 14.9 | 9.7 | 13.1 |
| 2014 | 15.5 | 10.1 | 13.7 |
| 2015 | 16.1 | 10.5 | 14.3 |
| 2016 | 16.7 | 10.8 | 15 |
| 2017 | 17.3 | 11.4 | - |