Year	%
1987	6
1992	6.2
1995	4.2
2000	4.5
2003	5.7
2004	5.8
2005	5.9
2006	5.7
2007	5.4
2008	5.7
2009	6.9
2010	7
2011	6.5
2012	6.2
2013	6.7
2014	6.8
2015	5.9
2016	6.7
2017	6.9
2018	6.6
2019	5.9
2020	6.8
2021	7.2