Year	Percent change
1980	15.578
1981	14.549
1982	14.416
1983	12.174
1984	11.28
1985	8.815
1986	8.795
1987	5.248
1988	4.837
1989	6.791
1990	6.722
1991	5.934
1992	7.145
1993	4.569
1994	4.718
1995	4.674
1996	3.599
1997	1.877
1998	1.764
1999	2.235
2000	3.484
2001	3.59
2002	3.104
2003	3.039
2004	3.039
2005	3.368
2006	3.515
2007	2.787
2008	4.076
2009	-0.288
2010	1.8
2011	3.196
2012	2.446
2013	1.409
2014	-0.151
2015	-0.5
2016	-0.203
2017	1.956
2018	1.675
2019	1.211
2020	1.625
2021	1.655
2022	1.938
2023	1.847
2024	1.939