Year	Percent
2000	12.54
2001	13.69
2002	12.86
2003	13.62
2004	13.05
2005	13.66
2006	10.87
2007	12.49
2008	10.59
2009	12.55
2010	10.83
2011	13.91
2012	14.93
2013	17.41
2014	13.43
2015	16.52
2016	16.75
2017	13.49
2018	14.98
2019	15.99
2020	14.92