Year 1 in: rate varies by country 2000 940 2001 1100 2002 1100 2003 1100 2004 1500 2005 1600 2006 1600 2007 1700 2008 1800 2009 1800 2010 1800 2011 2000 2012 2000 2013 2100 2014 2000 2015 2900 2016 3100 2017 3100 2018 3200 2019 3100 2020 2600