Year	Percent change
1980	-0.632
1981	-34.49
1982	-8.687
1983	-15.143
1984	-4.751
1985	-5.308
1986	-3.616
1987	-17.639
1988	-0.523
1989	1.321
1990	52.188
1991	-21.663
1992	0.601
1993	9.117
1994	-1.633
1995	0.621
1996	9.541
1997	0.185
1998	7.217
1999	-1.96
2000	3.729
2001	14.691
2002	13.018
2003	-22.481
2004	10.862
2005	44.686
2006	1.328
2007	119.532
2008	13.447
2009	-30.158
2010	-13.481
2011	4.299
2012	21.153
2013	13.379
2014	6.183
2015	-7.779
2016	19.715
2017	11.316
2018	-1.641
2019	12.422
2020	8.951
2021	9.106
2022	6.498
2023	5.166
2024	4.755