Year	Percent change (Units)
2000	-8.087
2001	-8.619
2002	25.051
2003	-11.145
2004	5.397
2005	3.019
2006	-4.860
2007	4.078
2008	7.763
2009	-5.032
2010	9.819
2011	17.356
2012	-8.702
2013	-6.340
2014	-2.588
2015	7.956
2016	10.076
2017	-3.210
2018	-2.050
2019	0.763
2020	-2.435