Year	Percent change
1980	-0.257
1981	2.538
1982	-1.802
1983	4.584
1984	7.237
1985	4.169
1986	3.463
1987	3.46
1988	4.177
1989	3.673
1990	1.886
1991	-0.108
1992	3.522
1993	2.753
1994	4.029
1995	2.684
1996	3.772
1997	4.447
1998	4.481
1999	4.753
2000	4.127
2001	0.999
2002	1.742
2003	2.861
2004	3.799
2005	3.513
2006	2.855
2007	1.876
2008	-0.137
2009	-2.537
2010	2.564
2011	1.551
2012	2.249
2013	1.842
2014	2.452
2015	2.881
2016	1.567
2017	2.217
2018	2.857
2019	2.331
2020	1.871
2021	1.766
2022	1.64
2023	1.615
2024	1.565