Year % 1995 0 2000 2.78 2001 3.33 2002 6.8 2003 4.31 2006 1.18 2007 1.06 2008 2.32 2009 2.38 2010 2.29 2011 2.38 2012 2.46 2013 2.46 2014 2.34 2015 3.2 2016 3.16 2017 2.93 2018 2.92 2019 3.09 2020 2.33 2021 3.01