Year 1 in: rate varies by country 2000 5300 2001 5400 2002 5500 2003 5600 2004 5800 2005 5800 2006 5800 2007 5800 2008 5700 2009 5600 2010 6000 2011 5800 2012 5800 2013 5800 2014 5800 2015 5800 2016 5700 2017 5700 2018 5700 2019 5900 2020 5600