Year	Percent change
1992	-1.54
1993	-6.451
1994	5.73
1995	-5.557
1996	9.752
1997	18.623
1998	-8.358
1999	-12.118
2000	-16.095
2001	-6.257
2002	-1.575
2003	1.678
2004	3.917
2005	-2.418
2006	27.925
2007	2.834
2008	-6.955
2009	24.617
2010	37.101
2011	14.599
2012	22.204
2013	-9.524
2014	-31.603
2015	-22.136
2016	-12.169
2017	9.148
2018	-16.985
2019	16.324
2020	4.325
2021	3.796
2022	3.945
2023	3.365
2024	3.442