Year	Percent change (Units)
1993	-5.049
1994	1.361
1995	-0.756
1996	-10.695
1997	-11.038
1998	-3.586
1999	0.000
2000	0.000
2001	-14.195
2002	-4.861
2003	0.336
2004	17.191
2005	17.927
2006	12.135
2007	13.790
2008	-4.668
2009	-13.891
2010	23.680
2011	16.137
2012	1.952
2013	6.094
2014	16.479
2015	8.476
2016	9.081
2017	8.347
2018	12.805
2019	8.877
2020	-10.932
2021	14.278
2022	11.410
2023	-0.132
2024	-0.608
2025	3.416
2026	4.740
2027	4.895
2028	4.173
2029	4.535