Year current US$ 1978 19999.9995529652 1979 39999.9991059303 1980 70000.0002980232 1981 59999.9986588955 1982 140000.000596046 1983 310000.002384186 1984 310000.002384186 1985 600000.023841858 1986 100000.00149011599 1987 330000.013113022 1988 300000.011920929 1989 389999.98569488496 1990 129999.995231628 1991 389999.98569488496 1992 620000.004768372 1993 209999.993443489 1994 479999.989271164 1995 529999.971389771 1996 389999.98569488496 1997 170000.00178813902 1998 349999.99403953605 1999 330000.013113022 2000 159999.99642372102 2001 129999.995231628 2002 319999.99284744303 2003 310000.002384186 2004 720000.028610229 2005 1960000.03814697 2006 670000.016689301 2007 949999.988079071 2008 460000.00834465 2009 1169999.95708466 2010 490000.009536743 2011 839999.973773956 2012 50000.0007450581 2013 239999.994635582 2014 59999.9986588955 2016 0 2017 170000.00178813902 2018 219999.998807907 2019 300000.011920929 2020 1019999.98092651 2021 230000.004172325 2022 870000.004768372