Year Percent 2000 6.04067 2001 6.87119 2002 7.70171 2003 8.53223 2004 9.36276 2005 10.19328 2006 11.04244 2007 11.89441 2008 12.74919 2009 13.60678 2010 14.46718 2011 15.33039 2012 16.19641 2013 17.06523 2014 17.93687 2015 18.81131 2016 19.68856 2017 20.56862 2018 21.45149 2019 22.33717 2020 23.22566 2021 24.11696 2022 25.01106