Year	Percent change (Units)
1993	788.503
1994	329.636
1995	30.216
1996	23.506
1997	11.773
1998	7.696
1999	39.262
2000	31.206
2001	9.641
2002	5.219
2003	11.667
2004	12.426
2005	11.851
2006	12.707
2007	12.382
2008	12.704
2009	0.006
2010	7.358
2011	7.650
2012	4.558
2013	4.569
2014	5.058
2015	9.628
2016	6.358
2017	6.506
2018	3.590
2019	4.846
2020	3.771
2021	5.099
2022	28.567
2023	13.437
2024	5.000
2025	5.000
2026	5.000
2027	5.000
2028	5.000
2029	5.000