Year	Percent change
1980	-0.56
1981	1.878
1982	1.78
1983	-1.576
1984	1.7
1985	-6.74
1986	0.132
1987	2.382
1988	2.058
1989	4.952
1990	1.611
1991	-7.993
1992	-9.646
1993	0.054
1994	3.5
1995	-10.025
1996	-24.787
1997	-17.596
1998	-0.837
1999	-8.122
2000	3.807
2001	18.17
2002	26.425
2003	9.327
2004	6.598
2005	4.505
2006	4.224
2007	8.058
2008	5.4
2009	3.187
2010	5.347
2011	6.312
2012	15.178
2013	20.72
2014	4.555
2015	-20.493
2016	6.354
2017	3.771
2018	3.728
2019	5.428
2020	5.37
2021	5.138
2022	5.136
2023	5.112
2024	5.091