Year	Percent change
1980	1.3
1981	3.578
1982	3.555
1983	3.859
1984	5.595
1985	0.228
1986	2.288
1987	4.561
1988	10.295
1989	8.776
1990	4.579
1991	2.789
1992	2.379
1993	0.887
1994	8.998
1995	5.524
1996	3.717
1997	9.994
1998	4.759
1999	4.486
2000	11.807
2001	2.134
2002	7.974
2003	-0.154
2004	7.088
2005	4.202
2006	5.089
2007	4.875
2008	-2.481
2009	-10.911
2010	8.442
2011	4.351
2012	-0.887
2013	2.377
2014	1.606
2015	1.333
2016	3.486
2017	1.396
2018	3.35
2019	2.827
2020	2.93
2021	2.728
2022	2.662
2023	2.65
2024	2.621