Year	Percent change
1991	-0.191
1992	-7.481
1993	10.832
1994	-19.179
1995	79.404
1996	117.171
1997	16.124
1998	-5.062
1999	64.81
2000	53.22
2001	2.018
2002	6.625
2003	-7.709
2004	-7.78
2005	-0.918
2006	-4.601
2007	-13.012
2008	-5.151
2009	-2.876
2010	8.487
2011	-12.474
2012	-16.659
2013	7.341
2014	11.969
2015	-42.603
2016	-82.954
2017	34.284
2018	4.522
2019	5.685
2020	393.43
2021	4.193
2022	4.525
2023	4.297
2024	23.897