Year	Percent change
1992	1.259
1993	4.288
1994	2.448
1995	5.972
1996	1.965
1997	1.705
1998	-0.424
1999	-0.008
2000	1.174
2001	0.603
2002	-2.288
2003	0.922
2004	1.688
2005	0.014
2006	-0.31
2007	1.929
2008	1.891
2009	0.525
2010	0.196
2011	0.154
2012	0.038
2013	0.157
2014	1.229
2015	-0.95
2016	-1.645
2017	-0.024
2018	0.048
2019	0.5
2020	0.5
2021	0.5
2022	0.5
2023	0.5
2024	0.5