Year % 2000 8.433121 2001 9.581801 2004 5.942788 2005 14.77513 2006 13.99822 2007 15.84884 2008 19.08726 2014 7.659972 2015 6.975349 2016 2.266226 2017 2.270965 2018 1.906152 2019 1.829606 2020 2.045505 2021 2.262844