Year	Percent change (Units)
2000	-0.771
2001	-12.530
2002	15.041
2003	-21.161
2004	28.780
2005	-0.115
2006	-2.212
2007	1.209
2008	-4.406
2009	-1.065
2010	-10.181
2011	-3.485
2012	19.789
2013	6.840
2014	7.369
2015	5.909
2016	8.884
2017	6.000
2018	6.000
2019	5.832
2020	5.525
2021	5.448
2022	5.261
2023	5.613
2024	5.536
2025	5.477
2026	5.467
2027	5.471
2028	5.513
2029	5.493