Year current US$ 1988 29999.999329447703 1989 39999.9991059303 1990 129999.995231628 1991 5190000.05722046 1992 2140000.10490417 1993 1000000 1994 819999.992847443 1995 899999.976158142 1996 8029999.73297119 1997 759999.990463257 1998 400000.00596046395 1999 1049999.95231628 2000 3000000 2001 3380000.1144409203 2002 6539999.96185303 2003 6039999.96185303 2004 8199999.80926514 2005 7519999.98092651 2006 7059999.94277954 2007 28159999.8474121 2008 21159999.8474121 2009 22069999.6948242 2010 29540000.915527303 2011 35689998.626709 2012 31329999.9237061 2013 42740001.6784668 2014 60930000.3051758 2015 44040000.9155273 2016 59950000.762939505 2017 37430000.3051758 2018 61330001.8310547 2019 72959999.0844727 2020 152770004.272461 2021 178479995.727539 2022 121250000