Year	constant 2015 US$
2000	12108052942.684172
2001	12468524155.482416
2002	13034874555.711052
2003	13632118149.671217
2004	13994386421.940104
2005	14586042125.510065
2006	15106670004.740593
2007	15864947388.476954
2008	16606966858.936703
2009	16082148146.972033
2010	16152282573.439518
2011	16100806921.721222
2012	16061195967.999855
2013	16060466279.404726
2014	16354240450.197676
2015	16613607546.844555
2016	16895631508.393572
2017	17134794827.535364
2018	17475675591.383457
2019	17831042556.47318
2020	17398337106.15075
2021	18075267140.42366
2022	18392913605.505444
2023	18685506937.37199