Year current international $ 2000 0 2001 0 2002 0 2003 0 2004 0 2005 0 2006 0 2007 0 2008 0 2009 1 2010 1 2011 1 2012 1 2013 1 2014 1 2015 2 2016 2 2017 2 2018 2 2019 2 2020 2 2021 2