Year	Percent change
1980	0.345
1981	3.437
1982	-6.901
1983	0.9
1984	2.7
1985	3.3
1986	5.23
1987	13.37
1988	21.446
1989	8.957
1990	2.339
1991	-1.202
1992	5.818
1993	7.359
1994	13.512
1995	4.67
1996	0.715
1997	8.219
1998	7.913
1999	7.579
2000	6.254
2001	12.542
2002	0.006
2003	3.727
2004	15.713
2005	5.013
2006	6.205
2007	14.663
2008	5.617
2009	-6.703
2010	5.476
2011	-7.625
2012	6.76
2013	2.585
2014	4.18
2015	-2.818
2016	0.223
2017	4.584
2018	2.938
2019	2.95
2020	3.686
2021	3.797
2022	4.102
2023	4.082
2024	4.112