Year | Sex |
| |
Female | Male | Total | |
2004 | 40.0 | 60.0 | 100 |
2005 | 42.3 | 57.7 | 100 |
2006 | 39.0 | 61.0 | 100 |
2007 | 37.4 | 62.6 | 100 |
2008 | 41.4 | 58.6 | 100 |
2009 | 42.2 | 57.8 | 100 |
2011 | 46.4 | 53.6 | 100 |
2012 | 47.0 | 53.0 | 100 |