Year current US$ 1996 6379999.92072582 1997 899999.9910593029 1998 2980000.00417233 1999 1489999.98904765 2000 2130000.0622868496 2001 1520000.01817942 2002 1510000.01095235 2003 9190000.1373142 2004 15830000.1621246 2005 9889999.95589256 2006 13109999.8466671 2007 21479999.903589502 2008 28790000.1443923 2009 26300000.0361353 2010 18759999.9085069 2011 8070000.054314731 2012 6430000.02391636 2013 1449999.98435378 2014 2019999.97906387 2015 1300000.0230968 2016 179999.99783933198 2017 299999.995157123 2018 320000.000298023 2019 400000.000372529 2020 29999.999329447703 2021 9069999.91647899 2022 16399999.503046278