Year % 1995 0 2000 2.78 2001 3.33 2002 6.8 2003 4.31 2006 3.91 2007 3.87 2008 4.32 2009 4.52 2010 4.35 2011 4 2012 4.14 2013 4.14 2014 3.91 2015 6.6 2016 5.83 2017 5.71 2018 5.09 2019 17.5 2020 5.84 2021 7.09