Year % (cumulative) 1998 0.123007118701935 1999 0.207487925887108 2000 0.252127021551132 2001 0.346265554428101 2002 0.855697691440582 2003 0.338454574346542 2004 0.452535718679428 2005 0.578436553478241 2006 0.579861164093018 2007 0.680931210517883 2008 0.888111531734467 2009 1.06161570549011 2010 1.79186236858368 2011 2.44837641716003 2012 2.76940250396729 2013 2.97165727615356 2014 14.7503499984741 2015 15.0368995666504 2016 15.8107595443726 2017 16.1765995025635 2018 16.2438163757324 2019 16.0015602111816 2020 16.3814144134521 2021 17.7132244110107 2022 17.4915103912354