Year	Percent
2000	11.4749
2001	12.1269
2002	12.6878
2003	11.5396
2004	9.624
2005	9.6286
2006	7.3179
2007	8.7705
2008	4.6587
2009	4.5345
2010	6.1738
2011	4.9495
2012	5.2789
2013	5.9183
2014	7.0504
2015	6.9361
2016	6.2565
2017	8.4358