Year	Percent change (Units)
2001	16.348
2002	-6.701
2003	-2.182
2004	0.400
2005	2.988
2006	-4.119
2007	10.262
2008	11.391
2009	10.144
2010	9.329
2011	5.956
2012	4.853
2013	3.068
2014	4.512
2015	2.761
2016	3.385
2017	-3.058
2018	-0.690
2019	2.075
2020	-7.241
2021	1.597
2022	3.994
2023	1.500
2024	3.500
2025	3.200
2026	3.100
2027	3.000
2028	3.000
2029	3.000