Year	National Currency
1970-01-01	37367996540.3
1971-01-01	41026386598.2
1972-01-01	45894054287.0
1973-01-01	52907439360.0
1974-01-01	63144351795.0
1975-01-01	72695197113.0
1976-01-01	83273512273.0
1977-01-01	91924595375.0
1978-01-01	99807202434.0
1979-01-01	112987467154.0
1980-01-01	127528866552.0
1981-01-01	149986335967.0
1982-01-01	157068285794.0
1983-01-01	163218988221.0
1984-01-01	176908612716.0
1985-01-01	192955579881.0
1986-01-01	205269016666.0
1987-01-01	224655382824.0
1988-01-01	248906497955.0
1989-01-01	269362430555.0
1990-01-01	279448738714.0
1991-01-01	282346939431.0
1992-01-01	285796416470.0
1993-01-01	290734102058.0
1994-01-01	301643084846.0
1995-01-01	314999702210.0
1996-01-01	328344263342.0
1997-01-01	352727720588.0
1998-01-01	374802929724.0
1999-01-01	396425591579.0
2000-01-01	429432612254.0
2001-01-01	446930594342.0
2002-01-01	458964945189.0
2003-01-01	478051091786.0
2004-01-01	509707869375.0
2005-01-01	539006692390.0
2006-01-01	576444352896.0
2007-01-01	607776274743.0
2008-01-01	624934819850.0
2009-01-01	592928545148.0
2010-01-01	616766880024.0
