Year	%
1997	14.41
2000	11.65
2001	11.28
2002	8.35
2003	8.17
2004	7.34
2005	7.11
2006	6.61
2007	5.72
2008	2.08
2009	4.9
2010	4.87
2011	1.24
2012	1.1
2013	1.17
2014	1.14
2015	1.11
2016	1.06
2017	0.85
2018	1.02
2019	1.02
2020	1.1
2021	1.13