Year	Percent change (Units)
1996	27.704
1997	-6.607
1998	16.381
1999	12.078
2000	12.428
2001	32.186
2002	30.700
2003	20.213
2004	-3.161
2005	18.646
2006	-10.584
2007	8.223
2008	-3.084
2009	-10.202
2010	15.841
2011	11.745
2012	12.102
2013	13.070
2014	9.412
2015	9.632
2016	17.432
2017	14.567
2018	8.063
2019	17.494
2020	-34.702
2021	5.424
2022	91.587
2023	40.175
2024	-10.846
2025	-2.296
2026	4.681
2027	5.822
2028	5.479
2029	5.894