Year	constant 2015 US$
1975	54898603519.52924
1976	56469065759.59019
1977	56600020456.55776
1978	58876840764.28042
1979	63446379589.935486
1980	66549692692.578064
1981	68180676641.79682
1982	70215523283.20306
1983	72644247000.78119
1984	75810796790.62494
1985	78826452827.34369
1986	81229657748.43744
1987	84317432123.04681
1988	87829040421.87492
1989	91416095597.26555
1990	93222382583.20306
1991	89210383970.70306
1992	86503172517.57806
1993	86487639337.10931
1994	90709335885.93744
1995	95921827446.09369
1996	99061748926.56244
1997	103949153209.76556
1998	108994108323.43744
1999	113917017019.14056
2000	119759711901.17181
2001	124072388507.0312
2002	125040993260.54683
2003	125571340422.26556
2004	130026034678.12494
2005	132641156561.32806
2006	134884591626.17183
2007	141468441119.14056
2008	145184199789.8437
2009	138206473220.70306
2010	140088207083.20306
2011	143969283174.6093
2012	144692685579.2968
2013	142745490456.24994
2014	142330532635.1562
2015	142650072347.6562
2016	145704561335.5468
2017	149592294504.2968
2018	152651221543.74994
2019	155152063599.2187
2020	150785020861.7187
2021	157013826229.68744
2022	161781403120.70306
2023	162558062144.14056