Year	Percent change
1980	12.138
1981	8.987
1982	4.556
1983	3.486
1984	4.589
1985	4.802
1986	6.818
1987	4.053
1988	5.063
1989	4.356
1990	7.036
1991	6.41
1992	3.505
1993	2.646
1994	1.443
1995	1.625
1996	0.999
1997	0.791
1998	1.472
1999	1.547
2000	1.095
2001	2.553
2002	1.892
2003	3.096
2004	1.654
2005	1.205
2006	2.433
2007	2.697
2008	4.187
2009	1.643
2010	1.669
2011	3.042
2012	0.655
2013	0.954
2014	0.207
2015	2.02
2016	0.77
2017	1.812
2018	2.806
2019	2.43
2020	2.331
2021	2.236
2022	2.208
2023	2.184
2024	2.132