Year constant 2011 international $ 2006 9057.39821746502 2007 9598.63829563084 2008 10213.8300597738 2009 9969.11434930344 2010 9923.10817709103 2011 10056.5477277964 2012 10126.78075723 2013 10603.0125713873 2014 10858.16685601 2015 11351.2044474828 2016 11809.757663872 2017 12219.9519870069 2018 12689.683977298