Year	Percent change
1980	1.08
1981	2.6
1982	3.191
1983	6.603
1984	7.14
1985	5.108
1986	-2.203
1987	3.377
1988	6.726
1989	0.371
1990	-3.97
1991	-5
1992	1.111
1993	-13.187
1994	16.709
1995	8.46
1996	4.6
1997	29.828
1998	22.533
1999	15.925
2000	21.721
2001	7.751
2002	5.929
2003	9.142
2004	18.359
2005	11.3
2006	12.538
2007	11.662
2008	2.848
2009	-17.573
2010	10.64
2011	1.609
2012	-4.018
2013	3.6
2014	6.663
2015	12.098
2016	7.812
2017	5.644
2018	0.848
2019	3.89
2020	2.631
2021	6.325
2022	6.762
2023	5.841
2024	5.519