Year	%
1991	3.57
1994	7.58
1995	5.19
1996	12.86
1997	8.6
1998	14.35
1999	6.07
2000	7.99
2001	8.22
2002	6.98
2003	6.19
2004	1.76
2005	1.46
2006	0.96
2007	0.83
2008	1
2009	0.8
2010	1.14
2011	1.27
2012	1.16
2013	1.23
2014	1.28
2015	1.38
2016	1.32
2017	2.51
2018	3.17
2019	3.17
2020	2.71
2021	2.39