Year	Percent change
1999	-1.111
2000	-4.231
2001	-0.454
2002	-7.704
2003	-16.224
2004	-6.27
2005	-7.413
2006	-3.556
2007	-3.401
2008	-16.323
2009	7.396
2010	19.683
2011	14.197
2012	16.658
2013	1.975
2014	2.383
2015	1.791
2016	0.742
2017	4.704
2018	3.448
2019	-5.249
2020	3.265
2021	4.165
2022	4.352
2023	4
2024	4