Year	Percent change
1980	14.074
1981	9.131
1982	9.647
1983	9.203
1984	8.158
1985	5.627
1986	3.322
1987	5.125
1988	5.983
1989	6.618
1990	5.21
1991	6.479
1992	0.524
1993	5.126
1994	2.638
1995	2.312
1996	0.474
1997	2.642
1998	0.066
1999	0.973
2000	1.505
2001	3.038
2002	1.592
2003	1.911
2004	1.127
2005	1.109
2006	1.401
2007	2.295
2008	2.666
2009	2.325
2010	1.782
2011	0.836
2012	0.976
2013	0.256
2014	0.312
2015	0.855
2016	1.425
2017	1.775
2018	2.216
2019	1.76
2020	1.71
2021	1.9
2022	2
2023	2
2024	2