Year	Percent change (Units)
1996	1.960
1997	10.729
1998	12.015
1999	2.820
2000	16.509
2001	14.927
2002	8.214
2003	12.716
2004	40.700
2005	22.963
2006	14.365
2007	11.620
2008	4.177
2009	-10.550
2010	15.927
2011	10.150
2012	4.182
2013	0.693
2014	9.308
2015	5.200
2016	4.398
2017	7.162
2018	3.539
2019	1.334
2020	-6.257
2021	6.878
2022	5.899
2023	2.175
2024	0.444
2025	3.999
2026	4.150
2027	4.550
2028	4.633
2029	4.800