Year	Percent
1992	0.015
1993	0.013
1994	0.013
1995	0.013
1996	0.014
1997	0.013
1998	0.014
1999	0.014
2000	0.014
2001	0.015
2002	0.017
2003	0.018
2004	0.019
2005	0.021
2006	0.023
2007	0.024
2008	0.025
2009	0.022
2010	0.021
2011	0.021
2012	0.022
2013	0.022
2014	0.022
2015	0.022
2016	0.021
2017	0.022
2018	0.023
2019	0.023
2020	0.023
2021	0.023
2022	0.023
2023	0.024
2024	0.024