Year	Percent change
1980	5.403
1981	-12.255
1982	-26.587
1983	3.227
1984	14.319
1985	-5.268
1986	-2.802
1987	-3.033
1988	17.907
1989	1.244
1990	-2.846
1991	6
1992	7.475
1993	7.072
1994	-2.735
1995	8.608
1996	2.291
1997	-1.394
1998	7.542
1999	4.417
2000	3.499
2001	8.487
2002	1.906
2003	0.646
2004	5.593
2005	5.695
2006	-1.054
2007	11.85
2008	8.201
2009	-18.194
2010	3.501
2011	9.805
2012	6.251
2013	-1.305
2014	4.114
2015	10.644
2016	-2.182
2017	4.649
2018	3.536
2019	3.586
2020	4.703
2021	4.899
2022	3.866
2023	4.878
2024	4.115