Year current US$ 1992 9999.99977648258 1994 29999.999329447703 1995 90000.0035762787 1996 2950000.04768372 1997 540000.021457672 1998 629999.995231628 1999 1690000.0572204601 2000 1360000.01430511 2001 5670000.07629395 2002 2640000.10490417 2003 2470000.02861023 2004 1220000.02861023 2005 1730000.01907349 2006 1080000.04291534 2007 970000.028610229 2008 1210000.03814697 2009 1279999.97138977 2010 1740000.0095367401 2011 1600000.02384186 2012 750000 2013 660000.026226044 2014 529999.971389771 2015 519999.980926514 2016 460000.00834465 2017 500000 2018 469999.998807907 2019 180000.00715255702 2020 230000.004172325 2021 289999.99165535 2022 379999.99523162795