Year	constant 2015 US$
1995	8982519573011.592
1996	8874643762836.127
1997	9191505674487.053
1998	8808938657781.402
1999	8895322238843.56
2000	9275598752114.88
2001	9575779365078.98
2002	10703905185728.543
2003	10670052150985.59
2004	12116148870957.193
2005	12851089458496.68
2006	14152734349184.02
2007	16392633148177.078
2008	17564913657534.594
2009	18317138371604.004
2010	20014580224728.008
2011	21529324645544.16
2012	22692222557055.94
2013	23823049651850.777
2014	24923571684494.44
2015	25673237052990.848
2016	26843548671476.77
2017	28291063174531.94
2018	29821345037483.348
2019	30869819737782.715
2020	30253319867420.617
2021	32459730124544.277
2022	33698980377246.777
2023	35291657539537.125