Year	Percent change (Units)
1996	11.033
1997	5.853
1998	5.571
1999	5.188
2000	14.358
2001	11.347
2002	4.984
2003	9.468
2004	25.586
2005	12.480
2006	11.482
2007	12.879
2008	3.178
2009	-11.077
2010	14.812
2011	6.717
2012	2.635
2013	0.062
2014	10.017
2015	6.848
2016	2.830
2017	6.251
2018	5.784
2019	1.545
2020	-8.196
2021	13.323
2022	6.283
2023	-0.280
2024	0.404
2025	3.800
2026	4.145
2027	4.900
2028	5.145
2029	5.315