Year current US$ 1987 9999.99977648258 1993 19999.9995529652 1994 9999.99977648258 1995 19999.9995529652 1996 19999.9995529652 1998 29999.999329447703 2001 9999.99977648258 2011 709999.978542328 2012 59999.9986588955 2013 39999.9991059303 2014 19999.9995529652 2016 29999.999329447703 2017 9999.99977648258 2018 29999.999329447703 2020 9999.99977648258 2021 9999.99977648258 2022 9999.99977648258