Year	Percent change (Units)
1993	1129.700
1994	1664.000
1995	411.760
1996	19.795
1997	3.674
1998	-0.773
1999	-8.525
2000	1.805
2001	1.768
2002	2.758
2003	2.121
2004	6.709
2005	9.577
2006	8.300
2007	16.713
2008	20.807
2009	1.460
2010	5.725
2011	7.875
2012	1.075
2013	2.408
2014	1.367
2015	4.040
2016	12.448
2017	12.937
2018	2.262
2019	2.595
2020	2.763
2021	6.664
2022	13.859
2023	8.225
2024	3.546
2025	5.000
2026	4.500
2027	4.000
2028	4.000
2029	4.000