Year	Percent change (Units)
2004	1.087
2005	1.900
2006	2.007
2007	12.319
2008	3.155
2009	1.964
2010	2.991
2011	2.000
2012	2.531
2013	1.458
2014	0.494
2015	0.232
2016	0.833
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