Year	Percent change
1980	2.684
1981	5.7
1982	2.9
1983	1.1
1984	2
1985	-1.5
1986	5.6
1987	-0.8
1988	-1.4
1989	9.8
1990	-10
1991	-28
1992	-7.2
1993	9.6
1994	9.4
1995	8.9
1996	9.1
1997	-10.924
1998	8.829
1999	12.891
2000	6.946
2001	8.293
2002	4.537
2003	5.529
2004	5.515
2005	5.526
2006	5.903
2007	5.983
2008	7.5
2009	3.354
2010	3.707
2011	2.545
2012	1.418
2013	1.024
2014	1.784
2015	2.207
2016	3.347
2017	3.844
2018	4.162
2019	3.664
2020	3.86
2021	3.856
2022	3.963
2023	3.973
2024	3.991