Year % 2001 0.57 2002 1.17 2004 0.84 2005 0.9 2006 0.89 2007 1.33 2008 1.63 2009 1.8 2010 1.29 2011 1.14 2012 0.69 2013 0.79 2014 0.79 2015 0.8 2016 0.63 2017 0.83 2018 1.15 2019 1.44 2020 1.69 2021 1.71