Year	Percent change
1980	9.689
1981	13.227
1982	6.71
1983	12.538
1984	7.54
1985	9.464
1986	4.38
1987	2.398
1988	1.543
1989	5.608
1990	7.543
1991	8.177
1992	3.895
1993	5.949
1994	5.692
1995	4.148
1996	3.913
1997	1.513
1998	2.219
1999	0.907
2000	1.67
2001	1.706
2002	1.429
2003	1.776
2004	0.542
2005	2.095
2006	3.283
2007	1.986
2008	4.229
2009	-1.574
2010	2.164
2011	0.921
2012	2.596
2013	0.376
2014	1.572
2015	0.646
2016	1.819
2017	1.973
2018	0.358
2019	1.4
2020	2
2021	2
2022	2
2023	2
2024	2