Year	Percent change
1987	7.263
1988	9.956
1989	7.906
1990	2.623
1991	9.987
1992	-6.272
1993	0.95
1994	5.367
1995	7.792
1996	1.246
1997	12.992
1998	8.992
1999	6.956
2000	11.645
2001	6.725
2002	-2.53
2003	1.689
2004	9.577
2005	2.737
2006	6.3
2007	-1.596
2008	8.5
2009	-18.902
2010	11.372
2011	10.079
2012	-3.227
2013	-2.031
2014	16
2015	-4.034
2016	4.592
2017	1.675
2018	-3.524
2019	3.18
2020	5.152
2021	1.317
2022	1.197
2023	1.151
2024	1.099