Year % 2000 0.0190521719457703 2001 0.0192473210440658 2002 0.0199260488615895 2003 0.0196922103545758 2004 0.0192150247135312 2005 0.0191877783493143 2006 0.0190313826615346 2007 0.0185102813437694 2008 0.0182796108281342 2009 0.0175563270104482 2010 0.0165650154896873 2011 0.0157396769576582 2012 0.0144507755081012 2013 0.0145363136952682 2014 0.0147046577793467 2015 0.014588087227577 2016 0.0147983702885618 2017 0.0148125690179561 2018 0.0160080498673089 2019 0.0160364184799109 2020 0.0171032873674179