Year	Percent change (Units)
2001	1.531
2002	5.051
2003	2.914
2004	2.369
2005	3.221
2006	4.190
2007	2.285
2008	10.443
2009	-0.283
2010	-1.853
2011	0.500
2012	1.415
2013	2.020
2014	1.124
2015	3.140
2016	3.492
2017	4.087
2018	2.160
2019	3.492
2020	1.859
2021	6.217
2022	11.540
2023	6.205
2024	4.131
2025	3.559
2026	3.247
2027	2.959
2028	2.840
2029	2.804