Year	Percent change (Units)
2001	20.673
2002	7.332
2003	-24.040
2004	0.832
2005	14.813
2006	1.948
2007	-0.110
2008	-5.671
2009	-8.944
2010	5.850
2011	14.191
2012	8.787
2013	-3.723
2014	8.099
2015	13.916
2016	-1.509
2017	-9.726
2018	-8.479
2019	-11.729
2020	-50.537
2021	-78.840
2022	99.771
2023	87.879
2024	75.133
2025	26.746
2026	14.658
2027	3.749
2028	3.707
2029	3.706