Year current US$ 1974 19999.9995529652 1991 170000.00178813902 1993 230000.004172325 1995 59999.9986588955 1996 379999.99523162795 1997 150000.005960464 1998 170000.00178813902 1999 280000.001192093 2000 209999.993443489 2001 109999.999403954 2002 230000.004172325 2003 2779999.97138977 2004 1639999.98569489 2005 3609999.89509583 2006 7829999.92370605 2007 5739999.771118159 2008 5550000.19073486 2009 2970000.02861023 2010 1240000.0095367401 2011 5300000.19073486 2012 3009999.99046326 2013 2039999.96185303 2014 1360000.01430511 2015 800000.011920929 2016 699999.988079071 2017 1100000.02384186 2018 1009999.99046326 2019 1049999.95231628 2020 949999.988079071 2021 1330000.04291534 2022 1289999.96185303