Year % 2000 0.01314317464243748 2001 0.012661779325945895 2002 0.012333000002379666 2003 0.012037066078854207 2004 0.011445097689453168 2005 0.011243499651785867 2006 0.010916222948471287 2007 0.010642654675922134 2008 0.011007238371186733 2009 0.01105865940978794 2010 0.010626624526996647 2011 0.010501226759863641 2012 0.010214515935541473 2013 0.00991117959131643 2014 0.00965601230047284 2015 0.009275405693940234 2016 0.009410939672878546 2017 0.009237528209065161 2018 0.00889925079027672 2019 0.008527531067499837 2020 0.008627660637382005