Year 1 in: rate varies by country 2000 2700 2001 3000 2002 3500 2003 3900 2004 4500 2005 4700 2006 3200 2007 3500 2008 3800 2009 4200 2010 4300 2011 4800 2012 3500 2013 3500 2014 5900 2015 6500 2016 7000 2017 6800 2018 6400 2019 10000 2020 5800