Year National currency (Units) 1980 343.935 1981 355.028 1982 359.225 1983 344.069 1984 310.213 1985 299.883 1986 320.692 1987 332.115 1988 339.792 1989 336.083 1990 318.499 1991 330.850 1992 339.087 1993 338.381 1994 340.351 1995 383.763 1996 395.537 1997 410.877 1998 435.785 1999 445.276 2000 471.749 2001 509.900 2002 526.979 2003 545.116 2004 558.590 2005 576.326 2006 598.409 2007 616.694 2008 624.187 2009 591.532 2010 598.786 2011 712.139 2012 550.674 2013 544.235 2014 552.410 2015 562.235 2016 571.364 2017 559.036 2018 530.599 2019 502.527 2020 472.014 2021 462.352 2022 439.370 2023 349.869 2024 326.677 2025 335.592 2026 351.293 2027 366.358 2028 374.927 2029 381.871