Year constant 2021 international $ 1995 45338.1200270475 1996 46166.241557581394 1997 47250.81883465894 1998 48327.045692166816 1999 49258.53566001385 2000 50336.836296540576 2001 51523.73118386653 2002 51687.65919126472 2003 51609.807325519694 2004 52047.45164655874 2005 52044.33109707726 2006 52522.805541200716 2007 53036.38507742863 2008 51316.66502023004 2009 49487.95669629006 2010 49572.915607222465 2011 49446.66134858254 2012 47721.36589988801 2013 46476.194391321136 2014 46444.01831603082 2015 46804.419330114855 2016 48355.45251887369 2017 49175.83037333319 2018 49926.21105795177 2019 50720.309232916115 2020 47034.06546420725 2021 50538.59539224468 2022 50899.815821438 2023 52388.88305770225