Year 1 in: rate varies by country 2000 22 2001 23 2002 24 2003 25 2004 26 2005 27 2006 28 2007 29 2008 30 2009 31 2010 33 2011 34 2012 36 2013 38 2014 40 2015 42 2016 44 2017 46 2018 48 2019 50 2020 52