Year current US$ 2011 1149999.97615814 2012 1601950.4070282 2013 1807587.74280548 2014 1454583.64486694 2015 1543010.4732513402 2016 1229111.43302917 2017 1517473.45924377 2018 1707331.7766189598 2019 1307877.06375122 2020 1447590.47031403 2021 3463999.98664856 2022 3197722.19657898