Year	Percent
2000	11.84
2001	17.65
2002	15.31
2003	17.37
2004	18.3
2005	16.12
2006	15.49
2007	13.54
2008	11.66
2009	14.53
2010	13.24
2011	13.34
2012	13.85
2013	12.73
2014	11.69
2015	11.64
2016	10.7
2017	10.58
2018	9.06
2019	9.33
2020	10.73