Year current US$ 1991 79999.9982118607 1992 100000.00149011599 1993 59999.9986588955 1995 50000.0007450581 1997 59999.9986588955 2000 9999.99977648258 2001 9999.99977648258 2006 29999.999329447703 2010 9999.99977648258 2013 9999.99977648258 2014 119999.997317791 2015 9999.99977648258 2016 189999.99761581398 2017 1019999.98092651 2018 159999.99642372102 2019 1129999.99523163 2020 740000.009536743 2021 319999.99284744303 2022 790000.021457672