Year current international $ 2000 4 2001 4 2002 3 2003 4 2004 5 2005 7 2006 7 2007 4 2008 3 2009 5 2010 4 2011 2 2012 3 2013 5 2014 4 2015 4 2016 7 2017 7 2018 1 2019 2 2020 3 2021 29 2022 7