Year	Percent change (Units)
2000	0.171
2001	8.343
2002	11.736
2003	-13.544
2004	431.946
2005	0.536
2006	41.592
2007	-7.084
2008	4.439
2009	-23.957
2010	-17.642
2011	21.509
2012	14.747
2013	-5.776
2014	37.305
2015	12.528
2016	-11.723
2017	-25.331
2018	-5.551
2019	-4.221
2020	5.676
2021	-0.211
2022	-6.210
2023	30.486
2024	6.838
2025	7.798
2026	5.420
2027	3.853
2028	4.681
2029	0.258