Year	Percent change (Units)
1996	23.092
1997	8.735
1998	5.369
1999	1.443
2000	1.094
2001	1.549
2002	0.336
2003	-1.077
2004	1.154
2005	2.672
2006	3.757
2007	5.818
2008	11.092
2009	4.161
2010	1.191
2011	4.124
2012	3.164
2013	1.164
2014	0.242
2015	-0.677
2016	0.678
2017	3.718
2018	2.531
2019	2.242
2020	1.062
2021	4.625
2022	18.858
2023	8.685
2024	1.460
2025	2.330
2026	2.243
2027	2.276
2028	2.298
2029	2.322