Year current US$ 1981 170000.00178813902 1982 280000.001192093 1983 340000.00357627904 1984 119999.997317791 1985 319999.99284744303 1986 180000.00715255702 1987 230000.004172325 1988 200000.00298023198 1989 360000.01430511504 1990 579999.983310699 1991 400000.00596046395 1992 -90000.0035762787 1993 -19999.9995529652 1994 -170000.00178813902 1995 -180000.00715255702 1996 -170000.00178813902 1997 239999.994635582 1998 230000.004172325 1999 -9999.99977648258 2000 90000.0035762787 2002 90000.0035762787 2003 -159999.99642372102 2004 -289999.99165535 2005 -180000.00715255702 2006 -250000 2007 -219999.998807907 2008 -189999.99761581398 2009 -219999.998807907 2010 -219999.998807907 2011 -230000.004172325 2012 -219999.998807907 2013 -219999.998807907 2014 -200000.00298023198 2015 -199292.004108429 2016 -86283.9967012405 2017 -40943.7417984009 2018 -39990.0004267693 2019 -35999.9984502792 2020 -39875.5483329296 2021 -39999.9991059303 2022 -38260.0016891956