Year current US$ 1977 39999.9991059303 1980 560000.002384186 1981 370000.00476837205 1982 150000.005960464 1983 100000.00149011599 1984 9999.99977648258 1985 50000.0007450581 1986 29999.999329447703 1987 109999.999403954 1988 19999.9995529652 1989 119999.997317791 1990 129999.995231628 1991 -19999.9995529652 1993 0 1994 0 1995 850000.023841858 1996 -29999.999329447703 1997 140000.000596046 1998 810000.002384186 1999 250000 2000 330000.013113022 2001 250000 2002 360000.01430511504 2003 400000.00596046395 2004 980000.019073486 2005 819999.992847443 2006 1009999.99046326 2007 829999.983310699 2008 1470000.02861023 2009 1940000.0572204601 2010 2240000.00953674 2011 2019999.9809265102 2012 2418982.9826355 2013 3104408.02574158 2014 2444745.5406189 2015 1704177.37960815 2016 1495598.91223907 2017 1165273.5471725499 2018 1232370.01895905 2019 2624687.19482422 2020 3449039.9360656696 2021 3656895.8759307903 2022 3321919.9180603