Year | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | Total |
Number | 27 | 44 | 46 | 57 | 69 | 56 | 99 | 119 | 92 | 124 | 136 | 869 |
Ratio | 3.11% | 5.06% | 5.29% | 6.56% | 7.94% | 6.44% | 11.39% | 13.70% | 10.59% | 14.27% | 15.65% | 100% |