Year current US$ 2008 1500000 2009 7980000.01907349 2010 6409999.84741211 2011 2759999.99046326 2012 4780326.36642456 2013 4762962.34130859 2014 7773362.63656616 2015 4055727.00500488 2016 3558549.88098145 2017 2680480.95703125 2018 6633724.21264648 2019 7446380.615234381 2020 4753170.01342773 2021 7279300.21286011 2022 3593780.99441528