Year	Percent change (Units)
1993	3102.400
1994	1748.300
1995	1005.261
1996	992.389
1997	83.722
1998	16.771
1999	23.465
2000	8.040
2001	11.632
2002	8.753
2003	5.587
2004	5.885
2005	10.708
2006	8.157
2007	6.259
2008	14.539
2009	-2.672
2010	4.447
2011	5.277
2012	5.314
2013	6.814
2014	6.009
2015	7.405
2016	3.646
2017	8.041
2018	13.300
2019	5.092
2020	6.100
2021	19.479
2022	11.211
2023	-1.738
2024	4.955
2025	7.900
2026	8.000
2027	8.000
2028	8.000
2029	8.000