Year	Percent
1996	6.69
1997	7.28
1998	8.97
1999	11.43
2000	10.89
2001	9.82
2002	10.85
2003	11.69
2004	10.41
2005	8.23
2006	7.16
2007	6.54
2008	5.97
2009	7.76
2010	5.53
2011	5.83
2012	5.54
2013	4.2
2014	5.34
2015	4.46
2016	5.14
2017	5.28
2018	5.34
2019	4.88
2020	8.14