Year	Percent change (Units)
2001	4.553
2002	-0.441
2003	2.555
2004	0.605
2005	4.510
2006	3.594
2007	8.348
2008	1.815
2009	5.035
2010	4.941
2011	6.320
2012	1.712
2013	5.340
2014	3.349
2015	5.916
2016	5.572
2017	4.825
2018	3.406
2019	4.757
2020	-5.341
2021	10.746
2022	4.278
2023	3.300
2024	3.800
2025	4.000
2026	3.900
2027	3.800
2028	3.800
2029	3.800