Year	Percent change (Units)
2003	1.337
2004	1.429
2005	1.687
2006	2.095
2007	2.475
2008	4.096
2009	2.417
2010	2.413
2011	2.179
2012	2.827
2013	1.604
2014	1.113
2015	0.146
2016	0.644
2017	1.014
2018	1.163
2019	0.473
2020	-0.133
2021	2.083
2022	5.304
2023	6.079
2024	2.264
2025	2.000
2026	2.000
2027	2.000
2028	2.000
2029	2.000