Year	Percent
1997	0.003
1998	0.003
1999	0.003
2000	0.003
2001	0.003
2002	0.003
2003	0.003
2004	0.003
2005	0.003
2006	0.003
2007	0.003
2008	0.003
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	0.001
2019	0.001
2020	0.001
2021	0.001
2022	0.001
2023	0.001
2024	0.001