Year	Percent
2000	5.75582
2001	8.23755
2002	6.97553
2003	14.24106
2004	9.06113
2005	12.32411
2006	12.27056
2007	13.73628
2008	14.82531
2009	13.54
2010	11.13983
2011	7.82782
2012	7.09236
2013	5.78318
2014	5.98433
2015	4.36579
2016	5.17852
2017	4.93539