Year	Percent change
1980	12.303
1981	5.698
1982	-6.617
1983	11.053
1984	1.494
1985	22.051
1986	123.564
1987	-41.893
1988	36.058
1989	4.848
1990	-10.515
1991	3.304
1992	1.87
1993	4.48
1994	-14.827
1995	2.316
1996	2.995
1997	12.084
1998	22.45
1999	-24.535
2000	-17.424
2001	-2.371
2002	11.309
2003	-2.342
2004	5.048
2005	0.9
2006	26.752
2007	11.321
2008	-0.79
2009	8.77
2010	12.412
2011	-17.433
2012	32.691
2013	36.431
2014	-5.439
2015	-10.2
2016	-16.101
2017	6.26
2018	4.887
2019	-0.192
2020	0.336
2021	1.093
2022	-3.501
2023	5.005
2024	2.685