Year current US$ 1988 19999.9995529652 1992 50000.0007450581 1994 70000.0002980232 1995 100000.00149011599 1996 70000.0002980232 1997 50000.0007450581 1998 19999.9995529652 1999 29999.999329447703 2000 59999.9986588955 2001 50000.0007450581 2002 70000.0002980232 2003 19999.9995529652 2004 39999.9991059303 2005 50000.0007450581 2008 50000.0007450581 2009 129999.995231628 2010 250000 2011 620000.004768372 2012 490000.009536743 2013 550000.011920929 2014 300000.011920929 2015 319999.99284744303 2016 300000.011920929 2017 100000.00149011599 2018 50000.0007450581 2019 360000.01430511504 2020 1240000.0095367401 2021 660000.026226044 2022 330000.013113022