Year	Percent change
1980	9.408
1981	12.493
1982	10.528
1983	6.208
1984	12.448
1985	7.729
1986	8.734
1987	2.699
1988	2.369
1989	3.138
1990	6.026
1991	8.991
1992	5.74
1993	5.183
1994	5.142
1995	6.124
1996	2.987
1997	1.041
1998	2.745
1999	0.69
2000	1.923
2001	0.613
2002	2.779
2003	1.163
2004	1.493
2005	0.983
2006	3.285
2007	2.036
2008	3.891
2009	0.972
2010	0.994
2011	0.907
2012	1.287
2013	1.881
2014	0.443
2015	1.545
2016	1.647
2017	0.754
2018	1.914
2019	1.4
2020	2
2021	2
2022	2
2023	2
2024	2