Year National Currency 1970-01-01 291299981091 1971-01-01 289058304445 1972-01-01 296330346389 1973-01-01 313051752572 1974-01-01 313802553363 1975-01-01 299537338339 1976-01-01 319315576313 1977-01-01 327885431053 1978-01-01 330706296880 1979-01-01 346183518896 1980-01-01 345153849242 1981-01-01 340381164939 1982-01-01 332778657146 1983-01-01 335143890968 1984-01-01 346843295416 1985-01-01 362597391334 1986-01-01 362259497510 1987-01-01 356684329715 1988-01-01 370622260671 1989-01-01 390515481370 1990-01-01 407156528500 1991-01-01 422361544087 1992-01-01 412630712758 1993-01-01 379416126525 1994-01-01 391439113476 1995-01-01 387936011354 1996-01-01 379805358966 1997-01-01 396455896184 1998-01-01 401256443158 1999-01-01 405019040342 2000-01-01 432481618009 2001-01-01 439747307163 2002-01-01 430794940715 2003-01-01 433865561217 2004-01-01 449434899467 2005-01-01 458690000000 2006-01-01 491472114768 2007-01-01 510155312543 2008-01-01 489482693232 2009-01-01 401083456603 2010-01-01 447402238907