Year constant 2021 international $ 2000 14623.279298824329 2001 14664.457928553886 2002 14669.457461166332 2003 15339.419778601505 2004 15857.334750159065 2005 16227.546436723931 2006 16659.570116774463 2007 17223.858061811767 2008 17670.352675449372 2009 17484.381574265382 2010 17852.110572140355 2011 18314.082839260627 2012 18553.51942338244 2013 18618.718503190677 2014 18883.658241565332 2015 19120.89723143248 2016 19743.824954998887 2017 19716.51151579499 2018 19743.931998025735 2019 19679.198137918862 2020 19016.543680733357 2021 19565.44220333582 2022 20359.787250668767