Year	%
1990	14.6
1995	11
1997	12.1
1999	11.8
2001	11.9
2002	11.1
2003	11.4
2004	12
2005	12.2
2006	12.1
2007	12.1
2008	12.4
2009	13.2
2010	12.8
2011	12.5
2012	13.8
2013	13.1
2014	12.6
2015	13.4
2016	13.2
2017	12.9
2018	13.7
2019	13.7
2020	14.4
2021	14.4
2022	13.9