Year	Percent change
1991	60.36
1992	-12.609
1993	12.169
1994	0.325
1995	23.938
1996	-17.188
1997	34.33
1998	11.874
1999	-18.806
2000	-17.953
2001	41.621
2002	-0.559
2003	27.419
2004	-17.739
2005	29.33
2006	-2.351
2007	20.023
2008	13.427
2009	-1.986
2010	23.515
2011	5.302
2012	-11.692
2013	-6.868
2014	22.39
2015	3.186
2016	-28.874
2017	2.431
2018	17.665
2019	12.506
2020	2.502
2021	1.035
2022	5.256
2023	-0.253
2024	2.482