Year % 1990 2.2 1995 0.7 1997 0.7 1999 0.9 2001 1 2002 1 2003 1.2 2004 1.4 2005 1.3 2006 1.3 2007 1.2 2008 1.5 2009 1.4 2010 1.3 2011 1.2 2012 1.5 2013 1.6 2014 1.4 2015 1.6 2016 1.6 2017 1.8 2018 1.7 2019 1.8 2020 2 2021 2.1 2022 1.8