Year	Percent change (Units)
1996	5.239
1997	8.311
1998	7.476
1999	-1.141
2000	3.696
2001	6.526
2002	6.751
2003	10.566
2004	6.570
2005	7.732
2006	7.414
2007	11.107
2008	2.615
2009	-14.839
2010	1.652
2011	6.039
2012	3.844
2013	3.550
2014	3.537
2015	2.025
2016	2.519
2017	4.283
2018	3.993
2019	4.666
2020	-0.025
2021	6.285
2022	2.440
2023	-0.343
2024	2.209
2025	2.459
2026	2.260
2027	2.225
2028	2.220
2029	2.229