Year	Percent change
1991	6.439
1992	-2.125
1993	-5.372
1994	-0.579
1995	15.24
1996	17.074
1997	-0.902
1998	-14.245
1999	7.116
2000	-4.01
2001	8.776
2002	-15.371
2003	32.69
2004	11.537
2005	12.94
2006	-14.396
2007	4.662
2008	-4.344
2009	2.167
2010	10.833
2011	-9.519
2012	-3.684
2013	-0.05
2014	-5.965
2015	4.132
2016	-10.414
2017	8.755
2018	1.302
2019	3.89
2020	6.333
2021	3.602
2022	12.364
2023	1.791
2024	2.291