Year	Percent change
1980	4.437
1981	-6.807
1982	5.216
1983	-1.425
1984	-1.322
1985	9.847
1986	19.899
1987	27.959
1988	16.384
1989	17.804
1990	9.043
1991	11.537
1992	5.903
1993	-7.115
1994	15.485
1995	13.227
1996	8.086
1997	13.429
1998	14.618
1999	13.2
2000	10.268
2001	3.272
2002	3.971
2003	6.585
2004	10.526
2005	6.715
2006	7.866
2007	9.391
2008	-6.297
2009	-19.447
2010	9.415
2011	-0.36
2012	-6.29
2013	0.33
2014	6.441
2015	5.454
2016	1.65
2017	5.81
2018	2.06
2019	3.043
2020	3.671
2021	3.481
2022	2.902
2023	2.301
2024	2.12