Year	%
2000	1.7
2001	1.4
2002	1.6
2003	1.6
2004	1.8
2005	1.6
2006	1.7
2007	1.5
2008	1.4
2009	1.5
2014	1.2
2015	1.2
2016	1.3
2017	1.2
2019	0.9