Year	constant 2015 US$
2000	23132119133.231636
2001	24512531820.92166
2002	25465334419.59752
2003	25876468857.375347
2004	26147975081.230972
2005	26960891648.863224
2006	28642394344.014698
2007	30334692318.03651
2008	31849740286.281208
2009	32959113027.004997
2010	33251550120.44816
2011	34501333615.27245
2012	34876287903.20068
2013	35145689843.54959
2014	35746798403.07158
2015	36555136567.189255
2016	36696144314.6407
2017	38274412136.373604
2018	39454800728.6342
2019	41099127543.10697
2020	42127588684.64829
2021	43468129714.44032
2022	44438626487.736465
2023	45129241718.892815