Year current US$ 1997 500000 1998 550000.011920929 1999 449999.988079071 2000 1090000.0333786 2001 1009999.99046326 2002 930000.007152557 2003 899999.976158142 2004 1080000.04291534 2005 1470000.02861023 2006 709999.978542328 2007 649999.976158142 2008 819999.992847443 2009 360000.01430511504 2010 230000.004172325 2012 1046399.9509811399 2013 1733332.9916000399 2015 2165493.48831177 2016 1532763.36193085 2017 805939.9724006649 2018 576125.8602142329 2019 367952.55541801505 2020 424021.512269974 2021 111369.997262955 2022 777899.980545044