Year 1 in: rate varies by country 2000 260 2001 270 2002 280 2003 270 2004 310 2005 250 2006 270 2007 290 2008 310 2009 280 2010 290 2011 310 2012 330 2013 340 2014 370 2015 330 2016 330 2017 330 2018 400 2019 420 2020 410