Year	Percent change
1980	1.009
1981	2.961
1982	2.878
1983	-0.124
1984	6.858
1985	1.213
1986	1.81
1987	2.436
1988	0.555
1989	1.498
1990	1.057
1991	-2.168
1992	0.87
1993	4.874
1994	6.673
1995	4.345
1996	3.74
1997	3.016
1998	0.762
1999	4.464
2000	4.123
2001	2.196
2002	5.079
2003	4.603
2004	4.409
2005	2.555
2006	2.748
2007	3.963
2008	-0.408
2009	0.322
2010	2.011
2011	1.866
2012	2.549
2013	2.192
2014	3.135
2015	4.003
2016	4.187
2017	2.559
2018	2.991
2019	2.519
2020	2.924
2021	2.845
2022	2.52
2023	2.487
2024	2.532