Year Percent 1995 0.006 1996 0.006 1997 0.006 1998 0.006 1999 0.006 2000 0.006 2001 0.006 2002 0.005 2003 0.005 2004 0.005 2005 0.005 2006 0.005 2007 0.005 2008 0.005 2009 0.004 2010 0.004 2011 0.004 2012 0.004 2013 0.004 2014 0.004 2015 0.003 2016 0.003 2017 0.003 2018 0.003 2019 0.003 2020 0.003 2021 0.003 2022 0.003 2023 0.003 2024 0.003