Year	Percent change (Units)
2001	4.635
2002	0.024
2003	5.787
2004	2.151
2005	3.918
2006	6.120
2007	0.479
2008	12.339
2009	-4.025
2010	-1.751
2011	1.729
2012	1.350
2013	3.124
2014	0.426
2015	4.001
2016	2.570
2017	4.345
2018	2.327
2019	3.703
2020	0.100
2021	9.790
2022	13.649
2023	6.205
2024	4.131
2025	3.559
2026	3.247
2027	2.959
2028	2.840
2029	2.804