Year	Percent change
1989	69.626
1990	64.325
1991	4027.83
1992	79.416
1993	63.8
1994	121.9
1995	32.9
1996	310.8
1997	549.206
1998	1.633
1999	6.97
2000	11.256
2001	4.822
2002	3.814
2003	5.64
2004	3.966
2005	7.394
2006	6.093
2007	11.563
2008	7.191
2009	1.637
2010	4.45
2011	2.039
2012	2.763
2013	-0.851
2014	-1.951
2015	-0.896
2016	-0.502
2017	1.796
2018	2.31
2019	2.2
2020	2.3
2021	2.3
2022	2.3
2023	2.3
2024	2.3