Year	Percent change
1980	9.668
1981	14.61
1982	6.593
1983	7.835
1984	6.31
1985	10.432
1986	14.007
1987	5.857
1988	5.938
1989	9.172
1990	9.272
1991	25.9
1992	31.7
1993	20.5
1994	29
1995	29.8
1996	18.7
1997	5.7
1998	4.95
1999	2.6
2000	0.3
2001	4.2
2002	1.43
2003	4.259
2004	3.972
2005	1.382
2006	2.315
2007	3.674
2008	4.855
2009	5.743
2010	3.913
2011	4.5
2012	8.916
2013	3.255
2014	2.917
2015	4.784
2016	6.398
2017	5.591
2018	4.27
2019	5.6
2020	6.7
2021	8.7
2022	10.2
2023	12.2
2024	14