Year	Percent change (Units)
2002	3.127
2003	3.056
2004	2.906
2005	3.527
2006	3.682
2007	2.659
2008	4.347
2009	-1.217
2010	1.706
2011	2.552
2012	1.467
2013	0.475
2014	-0.096
2015	-1.132
2016	-0.422
2017	2.586
2018	0.996
2019	0.530
2020	0.092
2021	1.677
2022	6.203
2023	5.607
2024	4.266
2025	2.440
2026	2.054
2027	1.700
2028	1.700
2029	1.700