Year	current US$
2015	2424979431.130949
2016	2567960139.9606147
2017	2696416614.0991583
2018	2911613222.936955
2019	3031553939.4360294
2020	3084474047.0519814
2021	3370977039.193227
2022	3776370837.013609
2023	3921774065.187524