Year	Percent change (Units)
1993	-60.379
1994	-16.819
1995	-8.140
1996	-0.502
1997	8.462
1998	16.684
1999	13.718
2000	15.724
2001	33.019
2002	8.713
2003	-1.355
2004	10.921
2005	47.912
2006	42.661
2007	47.639
2008	7.619
2009	5.156
2010	-1.890
2011	0.190
2012	-5.577
2013	-1.581
2014	-4.111
2015	-2.040
2016	-1.594
2017	-5.099
2018	8.248
2019	5.677
2020	-10.975
2021	6.535
2022	42.527
2023	-29.914
2024	-0.751
2025	5.038
2026	-2.505
2027	0.506
2028	-1.525
2029	-1.708