Year constant 2021 international $ 1990 36257.63776737795 1991 35007.037771918054 1992 34679.74117020098 1993 35125.01617028254 1994 36179.274815390585 1995 37178.59468817376 1996 37647.81699191371 1997 38819.54702411582 1998 39279.28778569375 1999 41196.77988409815 2000 44037.999774380754 2001 44068.476646840354 2002 44561.47914384018 2003 45790.23864253812 2004 47592.43468477027 2005 49282.24568054543 2006 50443.75544085524 2007 51513.597034993305 2008 52210.76517654568 2009 48443.74576876779 2010 50038.237430133624 2011 51658.69790695736 2012 51826.078454393144 2013 52718.77182366613 2014 53385.92904201364 2015 52138.855631949526 2016 52051.684085328154 2017 53597.17009446335 2018 54157.61975537307 2019 54499.33826813676 2020 50924.73351111388 2021 55302.1594158969 2022 56952.03536662489 2023 54688.4172907597