Year	constant 2015 US$
1970	76468736.2325129
1971	80579183.16043061
1972	82425278.6329624
1973	83737737.14607234
1974	88497202.08623742
1975	93256666.95014308
1976	94785464.77524826
1977	116981878.36903144
1978	120371194.3078039
1979	140043649.28705725
1980	138529274.1030876
1981	124241500.18851508
1982	128084020.95677432
1983	123122082.49349572
1984	115697254.53752713
1985	126456967.38279136
1986	119081846.68841515
1987	115592613.44271295
1988	117902997.63641416
1989	121599628.7575383
1990	118982019.52108632
1991	120410996.81350361
1992	121253873.76366837
1993	122587666.38322876
1994	125284595.03649165
1995	127790286.96009925
1996	129707141.25649372
1997	130999446.17162746
1998	134274411.33338144
1999	137631279.45626888
2000	138248374.55184427
2001	142484974.9012013
2002	147272738.16932553
2003	159483885.9156746
2004	165126275.7945191
2005	176048759.30253142
2006	191657434.8282316
2007	198636586.3691157
2008	211009232.40365857
2009	217977631.13848147
2010	221134893.27046588
2011	225556373.8082572
2012	232194322.31703642
2013	244081977.0861499
2014	256057151.1432334
2015	259999643.04738805
2016	273459361.11742795
2017	284706658.7926251
2018	297171513.19391745
2019	303157496.46587336
2020	311114954.7979903
2021	317023957.753826
2022	317230918.72276026
2023	315725838.98856896