Year	National currency, Sum Over Component Sub-periods
1981-01-01	635000000
1982-01-01	644000000
1983-01-01	734000000
1984-01-01	731000000
1985-01-01	736000000
1986-01-01	747000000
1987-01-01	855000000
1988-01-01	1087000000
1989-01-01	1136000000
1990-01-01	1358000000
1991-01-01	1556000000
1992-01-01	10429000000
1993-01-01	10877000000
1994-01-01	9120000000
1995-01-01	8113000000
1996-01-01	8572000000
1997-01-01	10358000000
1998-01-01	11456000000
1999-01-01	13337000000
2000-01-01	14586000000
2001-01-01	16312000000
2002-01-01	14934000000
2003-01-01	14511000000
2004-01-01	17194000000
2005-01-01	22233000000
2006-01-01	16963000000
2007-01-01	18931000000
2008-01-01	19693000000
2009-01-01	20245000000
2010-01-01	20270000000
2011-01-01	21034000000
2012-01-01	18938000000
2013-01-01	25302000000