Year	Percent change
1993	17.688
1994	-16.795
1995	20.287
1996	21.6
1997	15.603
1998	0.633
1999	7.678
2000	31.462
2001	17.323
2002	0.529
2003	5.475
2004	30.926
2005	23.544
2006	15.31
2007	25.375
2008	11.743
2009	-14.896
2010	-5.691
2011	10.158
2012	29.802
2013	7.433
2014	-8.363
2015	-9.053
2016	-11.845
2017	6.548
2018	1.715
2019	3.173
2020	2.973
2021	3.153
2022	3.123
2023	3.046
2024	3.025