Year % 2000 0.0303005963386406 2001 0.0290190089096017 2002 0.0256686204213058 2003 0.023112424727209 2004 0.0209262356659974 2005 0.0189798142368575 2006 0.0163635619151107 2007 0.0143727996366627 2008 0.012653572953278 2009 0.0172018570209548 2010 0.0178156731718508 2011 0.0114169813466231 2012 0.0104689141547041 2013 0.0102672493846989 2014 0.0103363198041351 2015 0.0103961667418351 2016 0.00992671248498193 2017 0.00974945221481549 2018 0.00993598694407036 2019 0.00933295424866187 2020 0.00982682738130482