Year	Percent change
1980	-6.757
1981	-9.505
1982	-12.68
1983	-4.117
1984	4.459
1985	-1.82
1986	-2.272
1987	4.288
1988	7.609
1989	14.746
1990	47
1991	-4.206
1992	4.305
1993	16.403
1994	-1.344
1995	11.827
1996	13.358
1997	14.944
1998	-8.303
1999	3.561
2000	22.529
2001	3.808
2002	6.703
2003	20.253
2004	21.625
2005	15.483
2006	13.131
2007	15.889
2008	19.502
2009	-12.805
2010	4.566
2011	19.899
2012	17.666
2013	8.071
2014	-4.618
2015	-0.398
2016	4.361
2017	-0.241
2018	-8.004
2019	2.874
2020	1.189
2021	-0.35
2022	0.082
2023	0.169
2024	-0.152