Year current US$ 1976 39999.9991059303 1978 79999.9982118607 1979 79999.9982118607 1990 39999.9991059303 1991 39999.9991059303 1994 19999.9995529652 1995 19999.9995529652 1996 29999.999329447703 1997 59999.9986588955 1998 50000.0007450581 1999 239999.994635582 2000 239999.994635582 2001 370000.00476837205 2002 709999.978542328 2003 1230000.01907349 2004 1600000.02384186 2005 1620000.00476837 2006 1759999.9904632599 2007 2920000.07629395 2008 2160000.08583069 2009 1679999.94754791 2010 1470000.02861023 2011 1889999.98569489 2012 810000.002384186 2013 779999.971389771 2014 1129999.99523163 2015 790000.021457672 2016 1409999.9666214 2017 2640000.10490417 2018 2549999.95231628 2019 2869999.8855590797 2020 2779999.97138977 2021 2849999.90463257 2022 2920000.07629395