Year National currency per current international dollar 1980 0.88 1981 0.782 1982 0.76 1983 0.799 1984 0.771 1985 0.747 1986 0.733 1987 0.715 1988 0.89 1989 0.835 1990 0.838 1991 0.867 1992 0.873 1993 0.831 1994 0.873 1995 0.992 1996 1.002 1997 1.096 1998 1.141 1999 1.249 2000 1.382 2001 1.444 2002 1.592 2003 1.67 2004 1.643 2005 1.72 2006 1.827 2007 1.785 2008 1.955 2009 1.846 2010 2.005 2011 2.138 2012 2.086 2013 2.123 2014 2.147 2015 2.031 2016 2.061 2017 2.17 2018 2.289 2019 2.241 2020 2.253 2021 2.265 2022 2.279 2023 2.28 2024 2.273