Year	Percent change (Units)
1999	-9.424
2000	6.132
2001	6.879
2002	6.380
2003	4.388
2004	9.028
2005	5.530
2006	5.108
2007	6.440
2008	5.656
2009	-2.732
2010	0.731
2011	2.036
2012	-0.682
2013	2.893
2014	-1.590
2015	1.806
2016	3.339
2017	2.101
2018	4.495
2019	4.332
2020	-0.903
2021	7.726
2022	2.550
2023	2.528
2024	3.465
2025	4.454
2026	4.010
2027	4.001
2028	4.025
2029	4.004