Year	Percent
1984	8.45
1990	4.78
1991	5.36
1992	5.56
1993	4.93
1994	5.44
1995	6.64
1998	6.26
1999	7.25
2000	8.87
2001	10.93
2002	12.74
2003	12.81
2004	9.41
2005	9.18
2006	7.84
2007	6.8
2008	5.64
2009	5.65
2010	4.93
2011	4.42
2012	4.58
2013	4.37
2014	4.61
2015	5.14
2016	5.42
2017	5.49
2018	5.78
2019	6.1
2020	7.43