Year current US$ 1974 720000.028610229 1975 219999.998807907 1976 1110000.01430511 1977 119999.997317791 1978 -39999.9991059303 1979 1679999.94754791 1980 430000.00715255697 1981 3190000.05722046 1982 280000.001192093 1984 2170000.07629395 1985 3359999.89509583 1986 3119999.8855590797 1987 779999.971389771 1988 2009999.9904632599 1989 1230000.01907349 1990 4610000.1335144 1991 6880000.11444092 1992 189999.99761581398 1993 239999.994635582 1994 2470000.02861023 1995 439999.997615814 1996 11069999.6948242 1997 9920000.07629395 1998 430000.00715255697 1999 560000.002384186 2000 610000.014305115 2001 4769999.98092651 2002 689999.997615814 2003 2849999.90463257 2004 10720000.2670288 2005 500000 2006 5630000.11444092 2007 4230000.01907349 2008 7750000 2009 4639999.8664856 2010 6539999.96185303 2011 879999.995231628 2012 8939999.5803833 2013 1000000 2014 3549999.95231628 2015 1110000.01430511 2016 660000.026226044 2017 1129999.99523163 2018 1659999.9666214 2019 2829999.92370605 2020 9899999.61853027 2021 819999.992847443 2022 79999.9982118607