Year	%
1989	12.6
1992	11.8
1994	11.6
1996	12.1
1998	12
2000	11.8
2002	12.5
2004	12.5
2005	12.6
2006	12.7
2008	12.5
2010	13.1
2012	12.6
2014	12.7
2016	13.2
2018	13.4
2020	13.8
2022	14.1