Year	current US$
2013	448475469.9782243
2014	448146144.7999955
2015	449318210.5659995
2016	427004045.66708493
2017	438188619.24026984
2018	455317552.2307437
2019	456471367.4804891
2020	301226921.9732052
2021	206781793.37275842
2022	602680606.1185791
2023	1022231145.4470772