Year	Percent change
1982	100
1983	150
1984	20
1985	150
1986	146.667
1987	240.541
1988	198.413
1989	77.128
1990	26.877
1991	32.325
1992	66.31
1993	-2.358
1994	7.657
1995	11.463
1996	5.433
1997	10.433
1998	-0.9
1999	8.454
2000	4.218
2001	-4.424
2002	5.722
2003	5.907
2004	8.004
2005	3.673
2006	10.884
2007	5.183
2008	14.234
2009	10.938
2010	1.456
2011	23.651
2012	4.265
2013	5.453
2014	2.056
2015	8.386
2016	5.687
2017	3.303
2018	2.229
2019	4.05
2020	4.794
2021	4.944
2022	5
2023	5
2024	5