Year National currency per current international dollar 1980 0.72 1981 0.765 1982 0.79 1983 0.846 1984 0.92 1985 0.972 1986 1.079 1987 1.209 1988 1.508 1989 1.76 1990 1.803 1991 2.1 1992 2.326 1993 2.912 1994 3.655 1995 6.409 1996 9.356 1997 10.822 1998 13.152 1999 18.024 2000 23.196 2001 28.159 2002 34.086 2003 36.927 2004 41.297 2005 44.352 2006 51.644 2007 52.355 2008 57.501 2009 61.574 2010 68.246 2011 76.259 2012 88.035 2013 110.137 2014 130.665 2015 156.31 2016 186.386 2017 202.802 2018 214.423 2019 226.596 2020 238.081 2021 247.987 2022 256.198 2023 262.863 2024 268.881