Year	constant 2015 US$
1987	9107884123791.459
1988	9720650563738.482
1989	10311052852531.63
1990	10610877816650.258
1991	10466298897456.258
1992	10307020470788.006
1993	10168607765399.834
1994	10511426106137.84
1995	10897063668272.518
1996	11510342661525.26
1997	11974007412640.447
1998	12260335657593.256
1999	12715768560385.533
2000	13393977333626.758
2001	13442491844115.307
2002	13363266069274.227
2003	13796034654109.648
2004	14558945893933.213
2005	15388203416396.264
2006	16197324652717.717
2007	16980236053629.947
2008	17045582784294.68
2009	15511311438474.086
2010	16094002779986.852
2011	16852245101013.83
2012	17377306363944.7
2013	17797556791165.977
2014	18382111658022.15
2015	18925831544748.71
2016	19352198142829.492
2017	20116100928367.156
2018	20854550841109.402
2019	21381654393655.477
2020	20472621155655.555
2021	21715627415107.76
2022	22317657177453.742