Year	%
1984	4.6
1987	4.9
1989	5.1
1992	4.7
1995	4.5
1997	4.4
2003	4.6
2006	5
2008	4.8
2011	5.2
2013	5.8
2015	5.8
2018	5.7
2021	5.9