Year National currency per current international dollar (Units) 1980 5.076 1981 6.543 1982 11.350 1983 14.082 1984 15.860 1985 18.533 1986 21.446 1987 23.050 1988 26.460 1989 29.344 1990 33.516 1991 53.171 1992 62.242 1993 67.146 1994 76.044 1995 90.300 1996 102.044 1997 115.041 1998 127.343 1999 139.416 2000 149.128 2001 160.022 2002 172.995 2003 187.710 2004 207.198 2005 227.042 2006 248.848 2007 267.764 2008 292.714 2009 319.143 2010 336.212 2011 344.546 2012 353.785 2013 357.828 2014 363.422 2015 364.163 2016 352.897 2017 350.817 2018 350.480 2019 353.541 2020 351.629 2021 344.196 2022 341.751 2023 329.442 2024 325.707 2025 330.253 2026 334.487 2027 338.775 2028 343.111 2029 347.433