| Voluntary | Compulsory | No insurance |
2009 | 1 | 1 | 1 |
2010 | 1.2151 | 1.1313 | 1.1169 |
2011 | 1.5081 | 1.5218 | 1.1468 |
2012 | 1.4926 | 1.4729 | 1.2849 |
2013 | 1.4522 | 1.4840 | 1.3486 |