Year	Percent change (Units)
2000	29.864
2001	23.729
2002	19.701
2003	7.502
2004	3.099
2005	3.446
2006	2.116
2007	3.365
2008	9.000
2009	3.551
2010	0.381
2011	3.451
2012	4.141
2013	2.207
2014	-0.714
2015	1.549
2016	-0.258
2017	2.373
2018	2.604
2019	0.366
2020	-0.238
2021	2.399
2022	13.050
2023	8.565
2024	4.164
2025	2.721
2026	2.051
2027	1.976
2028	1.942
2029	1.934