Year	%
1986	4.6
1990	5.2
1994	5.5
1998	5.2
2005	5.3
2006	5
2009	5.3
2011	7.3
2012	7.5
2013	7.6
2014	7.2
2015	7.2
2016	7.1
2017	6.9
2018	6.8
2019	6.9
2020	7
2021	7
2022	7.2