3 : 2007 : 23.0% | 3 : 2010 : 19.3% | 3 : 2012 : 20.1% | 3 : 2008 : 20.0% | 3 : 2011 : 19.5% | 3 : 2009 : 20.2% | 3 : 2013 : 18.8%
3 scores were highest in 2007 at 23 percent.