Year National Currency 1965-01-01 110.08117555576500 1966-01-01 120.52183939788100 1967-01-01 129.43637372247200 1968-01-01 136.99434847593000 1969-01-01 145.70297643704498 1970-01-01 163.65316647650602 1971-01-01 185.17643752922100 1972-01-01 207.68684791271502 1973-01-01 233.89751676925600 1974-01-01 269.25890666143400 1975-01-01 316.93228587554995 1976-01-01 345.07484090705400 1977-01-01 375.15533818303400 1978-01-01 396.39397396859100 1979-01-01 420.30333640981600 1980-01-01 446.63512665663800 1981-01-01 478.91397716619497 1982-01-01 508.46759639445800 1983-01-01 533.35804209694990 1984-01-01 553.58531427367100 1985-01-01 582.83613002623500 1986-01-01 610.20956422946200 1987-01-01 641.94336848276100 1988-01-01 665.38035750189500 1989-01-01 696.50855480379600 1990-01-01 742.35300102468700 1991-01-01 787.83408307473890 1992-01-01 834.28413624703010 1993-01-01 872.74017766085500 1994-01-01 909.86388378160400 1995-01-01 948.68328936626900 1996-01-01 983.96642226666600 1997-01-01 1006.67066724167000 1998-01-01 1028.05312658333000 1999-01-01 1056.86625433333000 2000-01-01 1085.29304733333000 2001-01-01 1118.15823583332990 2002-01-01 1148.31188591667000 2003-01-01 1179.69080166667000 2004-01-01 1201.74815683333000 2005-01-01 1237.28277991667000 2006-01-01 1275.93023316667000 2007-01-01 1313.01347758333000 2008-01-01 1351.05522316667000 2009-01-01 1371.70310516667000 2010-01-01 1402.50370616666990 2011-01-01 1448.52337891667000 2012-01-01 1492.33138225000020 2013-01-01 1540.65160100000000 2014-01-01 1586.57362633333000 2015-01-01 1613.88731616667020 2016-01-01 1641.05616783333000 2017-01-01 1676.95220566667000