Year % 2000 0.0187503484450491 2001 0.0131604254977305 2002 0.0125772492123817 2003 0.0124765458399862 2004 0.0121980533803192 2005 0.0124403924141151 2006 0.0120735280806663 2007 0.0129230440144927 2008 0.0127394957345034 2009 0.0136597518357313 2010 0.0137584185927821 2011 0.0131976570317984 2012 0.0144074395832927 2013 0.00911415851072521 2014 0.00920144985715897 2015 0.0144919867292212 2016 0.0146926468948523 2017 0.0155472058940883 2018 0.0152889737498466 2019 0.0157823660911521 2020 0.0164316043138414