Year	Percent
2001	57
2002	55
2003	49.7
2004	39.7
2005	41.4
2006	44.9
2007	46.3
2008	47.5
2009	45.4
2012	30.88
2014	35.15
2015	32.93
2016	27.47
2017	30.34
2018	29.42
2019	26
2020	26.17