Year National currency per current international dollar (Units) 1980 3.628 1981 3.674 1982 3.740 1983 3.907 1984 4.070 1985 4.229 1986 4.427 1987 4.722 1988 4.937 1989 5.152 1990 5.496 1991 6.047 1992 6.442 1993 6.913 1994 7.444 1995 7.952 1996 8.401 1997 8.793 1998 9.392 1999 9.545 2000 9.674 2001 9.765 2002 9.973 2003 10.158 2004 10.459 2005 10.711 2006 11.263 2007 11.728 2008 12.564 2009 13.366 2010 14.596 2011 15.550 2012 16.161 2013 17.342 2014 18.387 2015 19.235 2016 19.899 2017 20.648 2018 20.969 2019 21.119 2020 21.848 2021 22.635 2022 22.573 2023 22.167 2024 22.401 2025 22.924 2026 23.420 2027 23.906 2028 24.401 2029 24.901