Year National currency (Units) 1980 7991.676 1981 7960.464 1982 8062.989 1983 8078.188 1984 8189.168 1985 8550.921 1986 9159.029 1987 10066.213 1988 10496.937 1989 11025.620 1990 11565.263 1991 11713.545 1992 11534.767 1993 11185.619 1994 11263.790 1995 11403.128 1996 11818.763 1997 12330.884 1998 13725.319 1999 14625.308 2000 15304.803 2001 14936.169 2002 15390.887 2003 16787.977 2004 16624.499 2005 18774.962 2006 17977.187 2007 19033.589 2008 19164.019 2009 17840.850 2010 17676.109 2011 17718.053 2012 17404.888 2013 17695.522 2014 18867.769 2015 19955.019 2016 20577.347 2017 21372.278 2018 22189.342 2019 22229.157 2020 19083.088 2021 19872.965 2022 21222.029 2023 22132.573 2024 22941.524 2025 23674.615 2026 24267.300 2027 24808.078 2028 25361.633 2029 25928.278