Year	constant 2015 US$
2012	1319367931136.8982
2013	1342527698904.048
2014	1352412287564.482
2015	1325733351220.4688
2016	1291375636074.0837
2017	1316424238375.3953
2018	1356636691014.9497
2019	1376169234376.9414
2020	1350947185250.3657
2021	1426861269433.029
2022	1400775918647.884
2023	1462393828758.4453