Year	Percent change (Units)
1996	0.408
1997	0.271
1998	0.135
1999	1.080
2000	4.806
2001	4.331
2002	4.518
2003	3.037
2004	2.381
2005	1.993
2006	3.040
2007	3.267
2008	1.327
2009	-2.518
2010	-0.207
2011	1.449
2012	1.735
2013	0.301
2014	-0.300
2015	0.301
2016	-0.200
2017	0.501
2018	0.798
2019	0.989
2020	-0.979
2021	5.638
2022	8.240
2023	3.201
2024	2.115
2025	2.014
2026	1.950
2027	1.960
2028	1.980
2029	2.000