Year	Percent change (Units)
1993	48.393
1994	25.699
1995	-0.977
1996	-7.325
1997	-10.465
1998	-3.030
1999	0.000
2000	32.696
2001	-24.328
2002	15.103
2003	-5.914
2004	21.363
2005	9.666
2006	9.402
2007	14.981
2008	5.128
2009	-12.259
2010	10.367
2011	7.983
2012	8.240
2013	2.168
2014	14.147
2015	9.945
2016	11.126
2017	5.238
2018	10.733
2019	10.083
2020	-10.861
2021	14.796
2022	12.400
2023	-5.838
2024	1.694
2025	5.906
2026	4.738
2027	5.417
2028	4.839
2029	4.173