Year	Percent (Units)
1980	0.002
1981	0.002
1982	0.003
1983	0.003
1984	0.003
1985	0.003
1986	0.003
1987	0.002
1988	0.003
1989	0.002
1990	0.002
1991	0.002
1992	0.002
1993	0.002
1994	0.002
1995	0.002
1996	0.002
1997	0.002
1998	0.002
1999	0.002
2000	0.002
2001	0.002
2002	0.002
2003	0.002
2004	0.002
2005	0.002
2006	0.002
2007	0.002
2008	0.002
2009	0.002
2010	0.002
2011	0.002
2012	0.002
2013	0.002
2014	0.002
2015	0.002
2016	0.002
2017	0.002
2018	0.002
2019	0.002
2020	0.002
2021	0.002
2022	0.002
2023	0.002
2024	0.002
2025	0.002
2026	0.002
2027	0.002
2028	0.002
2029	0.002