Year constant 2021 international $ 1990 40304.67041735178 1991 39751.12338225603 1992 37930.31071965813 1993 38039.740403785356 1994 39072.37496995286 1995 38906.29928423272 1996 40464.1360779296 1997 42450.38854907996 1998 45090.476116944854 1999 46346.00627088788 2000 47994.71494740761 2001 49261.77552286899 2002 49097.20301268039 2003 49803.120726951034 2004 53219.66744321473 2005 55592.10913306413 2006 57732.5991801768 2007 61049.49939785038 2008 61248.76502471323 2009 56362.11658220453 2010 54844.370617848246 2011 55686.312437349705 2012 55979.94883166839 2013 57977.411808922465 2014 58303.36626143573 2015 60258.94590004095 2016 63174.45400605336 2017 64298.58664322086 2018 65660.02771023057 2019 65427.43796639461 2020 59906.214059990765 2021 61966.416772295976 2022 65794.94569087283 2023 66451.36295091025