Year	Percent change (Units)
1993	9.915
1994	9.915
1995	28.334
1996	-4.373
1997	-20.644
1998	24.160
1999	35.661
2000	4.997
2001	-20.313
2002	80.138
2003	14.747
2004	2.739
2005	0.538
2006	-9.401
2007	74.008
2008	11.126
2009	-0.500
2010	39.926
2011	12.739
2012	0.137
2013	26.663
2014	5.869
2015	-3.137
2016	19.650
2017	-30.421
2018	14.401
2019	-10.359
2020	-7.585
2021	9.517
2022	25.453
2023	10.309
2024	3.474
2025	4.120
2026	4.632
2027	5.518
2028	1.676
2029	1.759