Year	current US$
1999	763388240.61785
2013	14082484340.8419
2014	13546800634.2289
2015	13666133269.6036
2016	14172247686.6739
2017	14042810955.3947
2018	12440662981.1617
2019	12842925502.0694
2020	14687252839.0572
2021	14189479899.6491
2022	12702741317.6684
2023	9932455091.09936