Year	%
1983	6.2
1987	5
1990	7
1993	8.7
1999	6.2
2004	8.6
2005	7.8
2006	7.8
2007	7.8
2008	8.4
2009	8
2010	8.5
2011	7.4
2012	7.9
2013	8.2
2014	7.9
2015	7.9
2016	8.5
2017	7.8
2018	8.1
2019	8.7
2020	8
2021	7.9