Year constant 2021 international $ 1990 5520.956497890217 1991 5421.774731589604 1992 5323.838519619653 1993 5329.855412106304 1994 5327.127142279954 1995 5416.8680850055825 1996 5584.888271734004 1997 5749.778203531498 1998 5777.481085839998 1999 5907.440155909799 2000 6151.526669167876 2001 6287.029736550046 2002 6475.596479794142 2003 6754.074192695662 2004 7158.65658876915 2005 7540.548992474806 2006 8019.671063703675 2007 8566.172512540154 2008 8910.546705868377 2009 8988.826211252506 2010 9508.442469770333 2011 9927.531918163171 2012 10280.550232654306 2013 10637.097365230178 2014 10974.775931227661 2015 11279.880162908134 2016 11632.836146779504 2017 12059.288677548837 2018 12484.594166994999 2019 12811.045121131747 2020 12425.248859291924 2021 13168.88456596982 2022 13535.387171455239 2023 13997.432576978339