Year	current US$
2011	141811478.857085
2012	148702348.895839
2013	149898130.289003
2014	151397808.927537
2015	152246279.183135
2016	150208539.618202
2017	151488671.490534
2018	151791681.464481
2019	151899825.469941
2020	126875819.231962
2021	136598986.30576