Year	%
1986	8.6
1990	9.6
1994	9.7
1998	9.3
2005	9.6
2006	9.1
2009	9.8
2011	11.8
2012	11.9
2013	12
2014	12
2015	11.8
2016	11.6
2017	11.3
2018	11.2
2019	11.4
2020	11.6
2021	11.7
2022	11.9