Year current US$ 1978 9999.99977648258 1988 129999.995231628 1989 79999.9982118607 1990 59999.9986588955 1991 39999.9991059303 1992 239999.994635582 1993 479999.989271164 1995 219999.998807907 1997 1429999.94754791 2003 41119998.9318848 2004 30729999.5422363 2005 24559999.4659424 2006 274609985.35156304 2007 300619995.11718804 2008 269929992.675781 2009 52180000.3051758 2010 52220001.220703095 2011 37180000.3051758 2012 31670000.0762939 2013 13579999.923706101 2014 9750000 2015 13750000 2016 16040000.9155273 2017 7989999.771118159 2018 22620000.8392334 2019 23709999.084472697 2020 22270000.4577637 2021 15899999.6185303 2022 5889999.8664856