Year	Percent
1992	0.025
1993	0.021
1994	0.016
1995	0.015
1996	0.015
1997	0.016
1998	0.016
1999	0.016
2000	0.016
2001	0.017
2002	0.016
2003	0.017
2004	0.017
2005	0.016
2006	0.016
2007	0.016
2008	0.017
2009	0.018
2010	0.017
2011	0.017
2012	0.016
2013	0.018
2014	0.018
2015	0.018
2016	0.018
2017	0.018
2018	0.018
2019	0.018
2020	0.018
2021	0.018
2022	0.018
2023	0.018
2024	0.018