Year	Percent
2000	33.33
2001	39.26
2002	35.61
2003	27.07
2004	24.47
2005	22.35
2006	19.51
2007	15.12
2008	12.73
2009	16.16
2010	21.92
2011	25.03
2012	28.09
2013	28.36
2014	23.77
2015	21.65
2016	17.22
2017	12.93
2018	12.68
2019	8.9
2020	14.22