Year	Percent change (Units)
1995	11.119
1996	12.103
1997	7.251
1998	18.463
1999	7.193
2000	9.873
2001	4.838
2002	3.873
2003	6.480
2004	9.256
2005	9.583
2006	9.447
2007	16.877
2008	13.774
2009	0.933
2010	9.230
2011	7.950
2012	6.619
2013	5.675
2014	6.480
2015	3.052
2016	3.130
2017	5.678
2018	3.885
2019	6.130
2020	2.931
2021	7.210
2022	11.593
2023	5.591
2024	4.800
2025	4.000
2026	4.000
2027	4.000
2028	4.000
2029	4.000