Year	Percent change (Units)
2003	35.663
2004	16.358
2005	10.569
2006	6.785
2007	8.681
2008	26.419
2009	-6.811
2010	2.179
2011	11.804
2012	6.441
2013	7.386
2014	4.674
2015	-0.662
2016	4.384
2017	4.976
2018	0.626
2019	2.302
2020	5.607
2021	7.762
2022	10.600