Year	Percent change
1980	5.196
1981	3.498
1982	0.2
1983	-2.5
1984	-2
1985	3.6
1986	4.8
1987	-0.5
1988	1.14
1989	2.95
1990	-1.09
1991	0.04
1992	-0.25
1993	-0.18
1994	0.171
1995	5.572
1996	8.136
1997	5.723
1998	4.931
1999	1.618
2000	-2.068
2001	0.121
2002	-1.668
2003	-1.36
2004	1.232
2005	1.721
2006	1.516
2007	1.765
2008	2.543
2009	3.251
2010	2.018
2011	-4.857
2012	10.864
2013	9.272
2014	8.794
2015	8.843
2016	7.972
2017	7.702
2018	7.414
2019	7.479
2020	7.174
2021	6.967
2022	6.737
2023	6.534
2024	6.461