Year	%
1987	3.3
1990	3.4
1992	3.8
1994	3.5
1996	3.6
1998	3.5
2000	3.8
2003	4
2006	4.9
2009	5.1
2011	5.2
2013	5.4
2015	5.6
2017	5.6
2020	4.9
2022	5.9