Year	%
1990	8.3
1993	7.9
1996	7.4
1999	6.5
2002	5.7
2005	5.9
2008	5.2
2010	5.1
2011	5.4
2012	5.3
2013	6.2
2014	6.2
2015	6.4
2016	6.5
2017	6.4
2018	6.5
2019	6.7
2020	7.2