Year	Percent change
1980	-71.149
1981	-9.486
1982	105.795
1983	13.471
1984	-19.031
1985	-17.623
1986	3.454
1987	26.175
1988	5.04
1989	15.247
1990	20.7
1991	16.585
1992	4.3
1993	15.335
1994	6.279
1995	-21.537
1996	-0.8
1997	-14.21
1998	5.58
1999	2.606
2000	5.4
2001	-4.432
2002	-1.286
2003	21.071
2004	2.959
2005	3.925
2006	-2.295
2007	-0.501
2008	-3.974
2009	6.51
2010	5.383
2011	8.238
2012	-27.648
2013	-2.262
2014	18.691
2015	45.129
2016	22.419
2017	1.789
2018	-14.897
2019	-22.016
2020	5.049
2021	-1.945
2022	1.797
2023	0.881
2024	1.487