Year	Percent change (Units)
2001	-50.475
2002	168.803
2003	53.940
2004	105.814
2005	7.235
2006	81.294
2007	46.080
2008	14.721
2009	-15.146
2010	73.479
2011	1.423
2012	-12.610
2013	1.521
2014	10.033
2015	-2.909
2016	-4.522
2017	21.181
2018	-1.857
2019	4.038
2020	21.669
2021	51.611
2022	16.059
2023	-8.713
2024	8.272
2025	6.147
2026	7.084
2027	7.154
2028	6.013
2029	5.762