Year constant 2021 international $ 1993 14053.382907670339 1994 12427.734875120956 1995 11627.6190410341 1996 11830.707908313778 1997 12184.896230135377 1998 12168.978449360717 1999 12405.854329616433 2000 13260.084978921403 2001 15288.084818229469 2002 16937.536602297572 2003 18224.10775603752 2004 19582.778938220777 2005 20428.642914105298 2006 21650.710454475502 2007 22921.10755848607 2008 22263.7444502584 2009 23577.284550751592 2010 23852.09044555086 2011 24233.99151350304 2012 25498.60376825549 2013 27955.68509183378 2014 28863.1945316268 2015 30699.52886738115 2016 29197.776440111826 2017 29400.504893536512 2018 29419.03641345094 2019 30234.680959305322 2020 30920.89912893297 2021 29734.55230162804 2022 30149.25809581486