Year	Percent
1990	2.92
1991	2.55
1992	0.98
1993	1.35
1994	1.77
1995	3.1
1996	1.08
1997	3.18
1998	0.36
1999	1.41
2000	1.66
2001	1.19
2002	3
2003	2.17
2004	2.23
2005	4.26
2006	3.61
2007	0.39
2008	1.8
2009	2.87
2010	5.29
2011	3.89
2012	6.04
2013	5.15
2014	4.37
2015	2.75
2016	3.35
2017	3.35
2018	3.69
2019	5.83
2020	7.09