Year	constant 2015 US$
1980	25231948967.922325
1981	26791917305.12882
1982	28147802146.01587
1983	29258811399.019043
1984	30294755301.350853
1985	31064805864.246754
1986	31989348028.29276
1987	33807616463.154633
1988	35437693497.33736
1989	34396893181.18056
1990	36363951603.37882
1991	28405756466.984337
1992	27525714374.858173
1993	26545193555.70682
1994	25355371170.864525
1995	30185748241.434074
1996	29508301565.69094
1997	20085255842.977077
1998	21000261515.770363
1999	21794620490.129337
2000	23413964715.225773
2001	24852056954.844563
2002	25982784206.943493
2003	27759597231.67687
2004	30091587247.560688
2005	31856532221.46584
2006	34381529952.348526
2007	37414837190.832756
2008	38604067960.06353
2009	36830040276.832306
2010	37682899364.64714
2011	38459190492.39845
2012	39461491377.3542
2013	38282637848.876785
2014	38687735988.200584
2015	39694981847.06149
2016	40556716019.96823
2017	41735973451.32743
2018	43426811890.17472
2019	45645025527.56978
2020	46283632856.818695
2021	49269231903.78942
2022	51361645110.052185
2023	53413597685.50034