Year	Percent change (Units)
1999	21.587
2000	13.274
2001	6.555
2002	-1.823
2003	18.044
2004	11.565
2005	5.517
2006	26.142
2007	-11.730
2008	1.179
2009	-2.964
2010	13.680
2011	4.842
2012	-0.150
2013	7.945
2014	4.161
2015	9.751
2016	9.448
2017	12.447
2018	6.559
2019	0.562
2020	-14.486
2021	23.846
2022	12.473
2023	5.256
2024	5.402
2025	7.273
2026	5.589
2027	4.508
2028	3.890
2029	3.775