Year International Dollars 1970-01-01 1850.237860 1971-01-01 1990.119178 1972-01-01 2229.714578 1973-01-01 2335.752699 1974-01-01 2372.841830 1975-01-01 3088.173109 1976-01-01 3763.367014 1977-01-01 4232.472980 1978-01-01 4779.812412 1979-01-01 4932.534302 1980-01-01 5073.412648 1981-01-01 6065.158243 1982-01-01 6222.623568 1983-01-01 5950.650256 1984-01-01 6164.374420 1985-01-01 7358.357961 1986-01-01 7442.045096 1987-01-01 7161.637562 1988-01-01 7918.394104 1989-01-01 8110.948630 1990-01-01 6252.395745 1991-01-01 7057.701130 1992-01-01 7002.541157 1993-01-01 5726.408813 1994-01-01 5857.768896 1995-01-01 6061.440666 1996-01-01 6802.446008 1997-01-01 7886.064030 1998-01-01 8263.022843 1999-01-01 6374.612636 2000-01-01 6265.714099 2001-01-01 6436.070443 2002-01-01 7217.225803 2003-01-01 7982.959884 2004-01-01 8531.840799 2005-01-01 10289.530900 2006-01-01 10868.313530 2007-01-01 12072.727260 2008-01-01 12875.745560 2009-01-01 12679.066290 2010-01-01 12832.053290