Year	Percent change (Units)
1998	12.647
1999	13.628
2000	26.932
2001	14.666
2002	22.278
2003	33.581
2004	19.125
2005	12.862
2006	17.005
2007	12.850
2008	5.152
2009	2.986
2010	23.377
2011	11.734
2012	5.793
2013	9.702
2014	3.717
2015	-0.670
2016	5.432
2017	7.297
2018	8.596
2019	0.438
2020	0.002
2021	10.666
2022	-5.855
2023	2.335
2024	3.444
2025	0.932
2026	3.632
2027	3.352
2028	3.209
2029	3.064