Year 1 in: rate varies by country 2000 2200 2001 2200 2002 2100 2003 2900 2004 2900 2005 2900 2006 2900 2007 2800 2008 2700 2009 2600 2010 2700 2011 2700 2012 4000 2013 4000 2014 3900 2015 3900 2016 4000 2017 6100 2018 5300 2019 3400 2020 2100