Year	Percent change
1980	7.494
1981	2.777
1982	6.406
1983	6.994
1984	4.186
1985	-0.93
1986	0.484
1987	-1.222
1988	5.952
1989	1.013
1990	3.503
1991	2.286
1992	7.123
1993	7.604
1994	3.212
1995	1.923
1996	3.25
1997	2.348
1998	4.849
1999	5.972
2000	7.018
2001	2.491
2002	3.349
2003	6.296
2004	6.981
2005	6.769
2006	6.467
2007	8.294
2008	6.242
2009	2.541
2010	4.337
2011	1.984
2012	3.728
2013	5.416
2014	4.351
2015	2.871
2016	3.465
2017	3.804
2018	1.829
2019	1.845
2020	2.098
2021	2.355
2022	2.447
2023	2.792
2024	2.973