Year National currency (Units) 1980 16980.881 1981 16855.832 1982 17207.529 1983 17916.418 1984 18284.050 1985 18982.689 1986 19527.768 1987 20542.655 1988 21604.645 1989 22061.268 1990 22122.506 1991 21735.424 1992 21733.524 1993 22174.897 1994 22872.403 1995 23352.400 1996 23898.116 1997 25010.581 1998 25793.296 1999 26489.486 2000 27538.702 2001 28140.375 2002 28522.572 2003 29286.366 2004 29840.384 2005 30422.707 2006 30936.673 2007 31492.588 2008 31164.839 2009 29517.949 2010 29938.815 2011 30030.434 2012 30283.792 2013 30633.747 2014 31372.448 2015 31816.326 2016 32161.787 2017 32819.730 2018 33082.079 2019 33443.433 2020 29851.806 2021 32345.619 2022 33496.325 2023 33381.788 2024 33382.548 2025 33754.325 2026 34205.970 2027 34682.185 2028 35120.786 2029 35508.079