Year 1 in: rate varies by country 2000 28 2001 32 2002 32 2003 34 2004 35 2005 37 2006 39 2007 39 2008 38 2009 40 2010 41 2011 44 2012 50 2013 56 2014 57 2015 61 2016 75 2017 76 2018 76 2019 81 2020 80