Year	Percent change (Units)
2001	34.146
2002	28.451
2003	14.338
2004	20.999
2005	-13.604
2006	7.790
2007	26.014
2008	6.463
2009	-21.743
2010	2.906
2011	8.003
2012	0.753
2013	2.684
2014	1.930
2015	7.175
2016	10.963
2017	9.964
2018	8.945
2019	9.807
2020	-1.007
2021	14.095
2022	10.400
2023	-2.805
2024	8.575
2025	7.325
2026	6.050
2027	5.350
2028	5.250
2029	5.550