Year	Percent change (Units)
1993	929.867
1994	62.124
1995	30.959
1996	34.814
1997	12.979
1998	16.845
1999	39.837
2000	10.480
2001	3.685
2002	2.285
2003	5.565
2004	2.764
2005	4.921
2006	5.098
2007	20.094
2008	20.028
2009	-0.040
2010	19.226
2011	5.708
2012	7.495
2013	3.970
2014	10.475
2015	3.352
2016	-0.503
2017	3.656
2018	0.486
2019	3.056
2020	9.722
2021	11.195
2022	14.669
2023	7.275
2024	7.956
2025	5.536
2026	5.536
2027	4.000
2028	4.000
2029	4.000