Year % 2000 0.0217406695444924 2001 0.0194049483640153 2002 0.0176081994949987 2003 0.0154777000217721 2004 0.0166447335717354 2005 0.0179419508302964 2006 0.0164879991723847 2007 0.0146579139828785 2008 0.0158236941382987 2009 0.0148992292053266 2010 0.0136725718894024 2011 0.0154702529823734 2012 0.0146934645799187 2013 0.0134837081461176 2014 0.0131056608763599 2015 0.0135459168987719 2016 0.0093044210842274 2017 0.00972087035909798 2018 0.00945487165424734 2019 0.00961735989985434 2020 0.00868349501012509