Year	Percent change (Units)
2003	8.692
2004	0.671
2005	11.830
2006	5.361
2007	13.340
2008	3.863
2009	20.585
2010	8.438
2011	6.479
2012	13.968
2013	5.683
2014	2.697
2015	0.988
2016	2.164
2017	2.647
2018	1.189
2019	3.912
2020	-2.351
2021	-14.542
2022	-6.240