Year	Percent change
1980	3.997
1982	0.961
1983	7.845
1984	-2.305
1985	-11.413
1986	9.693
1987	13.87
1988	0.574
1989	-0.457
1990	2.602
1991	-7.218
1992	-8.907
1993	13.363
1994	3.486
1995	6.121
1996	13.533
1997	2.84
1998	-4.185
1999	6.294
2000	9.838
2001	7.4
2002	1.6
2003	-2.1
2004	11.7
2005	12.6
2006	11.5
2007	11.8
2008	11.2
2009	10
2010	10.6
2011	11.4
2012	8.7
2013	9.9
2014	10.3
2015	10.4
2016	8
2017	10.148
2018	7.705
2019	7.723
2020	7.467
2021	7.04
2022	7.004
2023	6.994
2024	7.004