Year	Percent change (Units)
1998	-8.760
1999	65.632
2000	81.042
2001	6.384
2002	5.940
2003	16.822
2004	-0.692
2005	6.131
2006	2.951
2007	9.226
2008	-8.330
2009	-46.159
2010	24.485
2011	27.606
2012	13.643
2013	2.379
2014	10.480
2015	-7.937
2016	-5.419
2017	-14.145
2018	15.546
2019	-12.517
2020	-9.658
2021	21.533
2022	-8.278
2023	-0.881
2024	1.499
2025	1.184
2026	1.558
2027	1.517
2028	1.476
2029	-0.917