Year	constant 2015 US$
1980	7874398479.819077
1981	8885291596.013649
1982	9262831737.506512
1983	10199588815.44933
1984	9985165569.39844
1985	11232299392.100574
1986	11968072811.103846
1987	12636463111.343748
1988	12544591325.015795
1989	12554185259.920267
1990	13281377743.147968
1991	11757760176.26701
1992	10010575670.18032
1993	8757139296.009
1994	7719365464.076383
1995	9072555524.051596
1996	6921245780.4385605
1997	4864182190.425913
1998	7001685804.999752
1999	6558131113.8545065
2000	6703524472.775759
2001	6769839274.406247
2002	6803875956.166977
2003	7352433810.544074
2004	7703578910.708938
2005	7761271086.293375
2006	8197961713.28354
2007	8114515115.166817
2008	8268360916.725315
2009	7783508385.043717
2010	7948983386.203799
2011	8134766940.814451
2012	7985289180.081912
2013	8037422030.978764
2014	8030557966.823683
2015	8175213864.306785
2016	8354246810.368224
2017	8712199246.885235
2018	9177991236.780823
2019	9361846046.091698
2020	10142193703.259367
2021	10180825337.057796
2022	10738289456.495619
2023	10691035196.651138