Year	Percent change
1993	1129.70
1994	1664.00
1995	411.76
1996	19.795
1997	3.674
1998	-0.773
1999	-8.525
2000	1.805
2001	1.768
2002	2.758
2003	2.121
2004	6.709
2005	9.577
2006	8.227
2007	16.586
2008	20.783
2009	1.35
2010	5.664
2011	7.754
2012	1.007
2013	2.424
2014	1.448
2015	4.048
2016	12.438
2017	12.844
2018	2.3
2019	2.5
2020	2.5
2021	2.7
2022	2.7
2023	3
2024	3