Year	Percent
2002	5.87
2003	6.32
2004	7.67
2005	8.53
2006	7.23
2007	7.48
2008	7.47
2009	7.13
2010	6.82
2011	6.97
2012	6.7
2013	6.88
2014	7.35
2015	6.73
2016	8.08
2017	8.17
2018	8.21
2019	7.33
2020	12.57