Year	Percent (Units)
1980	0.002
1981	0.002
1982	0.002
1983	0.002
1984	0.002
1985	0.001
1986	0.001
1987	0.001
1988	0.001
1989	0.001
1990	0.001
1991	0.001
1992	0.001
1993	0.001
1994	0.002
1995	0.002
1996	0.002
1997	0.002
1998	0.002
1999	0.001
2000	0.001
2001	0.001
2002	0.001
2003	0.001
2004	0.001
2005	0.001
2006	0.001
2007	0.001
2008	0.001
2009	0.001
2010	0.001
2011	0.001
2012	0.001
2013	0.001
2014	0.001
2015	0.001
2016	0.001
2017	0.001
2018	0.001
2019	0.001
2020	0.001
2021	0.001
2022	0.001
2023	0.001
2024	0.001
2025	0.001
2026	0.001
2027	0.001
2028	0.001
2029	0.001