Year	Percent (Units)
1980	0.001
1981	0.001
1982	0.001
1983	0.001
1984	0.002
1985	0.002
1986	0.002
1987	0.001
1988	0.002
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	0.001
2001	0.001
2002	0.001
2003	0.002
2004	0.002
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