Year constant 2021 international $ 1995 40551.33394785919 1996 41206.108677554264 1997 42227.024253728894 1998 43513.99179924779 1999 44742.13194204753 2000 45832.58033561914 2001 46671.09034231236 2002 46947.32722592484 2003 47160.19493094352 2004 48124.81309082352 2005 48608.57537516405 2006 49868.36757647984 2007 51068.0322883481 2008 50538.93650772323 2009 48892.38525358265 2010 49519.59213642967 2011 50070.20996747216 2012 49481.58330110904 2013 49396.18349469251 2014 50025.016545914936 2015 51139.30078080866 2016 52298.44222057921 2017 53406.742858868565 2018 54256.17605408213 2019 55106.24194825696 2020 51610.54506212232 2021 54703.53851778271 2022 54906.91751133871