Year	Percent change
1980	188.816
1981	33.7
1982	70.381
1983	62.511
1984	27.175
1985	114.698
1986	35.002
1987	6.112
1988	14.8
1989	59.7
1990	-26.317
1991	13.439
1992	9.847
1993	5.65
1994	7.67
1995	19.075
1996	19.147
1997	19.544
1998	90.141
1999	128.409
2000	8.369
2001	7.809
2002	10.633
2003	15.489
2004	10.467
2005	7.167
2006	6.546
2007	4.759
2008	7.628
2009	0.034
2010	5.984
2011	7.581
2012	4.259
2013	6.371
2014	4.129
2015	1.278
2016	1.763
2017	0.66
2018	2.04
2019	3.1
2020	3.3
2021	3.1
2022	3.1
2023	3.1
2024	3.1