Year	Percent change (Units)
1998	30.000
1999	41.100
2000	70.000
2001	80.744
2002	8.868
2003	2.901
2004	10.602
2005	16.253
2006	10.732
2007	6.002
2008	12.411
2009	8.117
2010	6.143
2011	11.137
2012	7.330
2013	7.694
2014	2.082
2015	1.392
2016	1.122
2017	3.131
2018	1.960
2019	1.849
2020	1.576
2021	4.085
2022	11.982
2023	12.372
2024	4.759
2025	3.098
2026	3.000
2027	3.000
2028	3.000
2029	3.000