Year	Percent change (Units)
2003	0.375
2004	-3.736
2005	0.776
2006	1.027
2007	10.546
2008	0.460
2009	0.114
2010	6.514
2011	3.541
2012	3.731
2013	0.500
2014	-0.398
2015	-0.181
2016	1.292
2017	0.486
2018	2.913
2019	1.247
2020	0.056
2021	6.666
2022	12.214
2023	2.513
2024	3.448
2025	1.541
2026	2.000
2027	2.000
2028	2.000
2029	2.000