Year current international $ 1990 17054.44482182599 1991 17382.84995869448 1992 17802.10801421445 1993 18633.0827722684 1994 19712.677408473297 1995 20581.042006181015 1996 21938.445022076743 1997 23065.190519411874 1998 23687.69175229068 1999 24493.501365736534 2000 26529.852173435083 2001 27915.530440474096 2002 29089.05367704072 2003 30317.524313622907 2004 32055.471764234644 2005 32726.133188377244 2006 34734.81602464148 2007 35523.311587650154 2008 36744.7913584035 2009 35023.332310601516 2010 36487.67185318747 2011 37224.37876452561 2012 38343.086903348434 2013 39954.2191450769 2014 41278.12750799189 2015 42496.85429092182 2016 44082.116467849395 2017 46048.200050664454 2018 47090.48489672933 2019 49911.15665220032 2020 48005.87960619596 2021 52841.63458504742 2022 56761.51729821026 2023 58906.23885754179