Year	Percent change (Units)
2001	10.126
2002	-0.408
2003	-9.942
2004	-5.148
2005	2.758
2006	-16.253
2007	2.392
2008	10.097
2009	3.638
2010	8.422
2011	11.136
2012	-0.186
2013	-12.587
2014	-2.876
2015	7.316
2016	-8.954
2017	6.232
2018	31.608
2019	-16.875
2020	-2.512
2021	21.808
2022	20.904
2023	-12.452
2024	-1.816
2025	1.674
2026	2.200
2027	2.600
2028	2.600
2029	2.600