Year	constant 2015 US$
1970	24471167784.737476
1971	24564756306.574585
1972	24195193095.887867
1973	26611105268.117943
1974	30804958590.95583
1975	30725496387.242157
1976	25820110228.620678
1977	24603089976.94568
1978	22291838155.68826
1979	27097748717.07497
1980	30761244892.57809
1981	28889496646.09372
1982	30236445295.31247
1983	30761244892.57809
1984	30911029132.812466
1985	31596708099.218716
1986	31979490046.484344
1987	33997693994.53122
1988	38687604983.203094
1989	44244045539.453094
1990	41463606235.54685
1991	31790872855.078106
1992	28119494699.999985
1993	25081648405.46874
1994	28034062207.421864
1995	31497961451.953114
1996	32446594973.437485
1997	37092125446.48436
1998	41884111621.093735
1999	42108233224.99998
2000	46647250460.54685
2001	46561817967.96873
2002	45614293959.37498
2003	46791487136.3281
2004	49385528274.609344
2005	53340941729.68747
2006	53225552389.06247
2007	58808621254.68747
2008	57965391457.81247
2009	46400938598.8281
2010	50344147412.10935
2011	56047043669.92185
2012	53317641958.98435
2013	51035373942.96873
2014	50574926093.35935
2015	50924422653.90623
2016	55520025046.87498
2017	58423620281.6406
2018	61782115801.56248
2019	58707655581.6406
2020	58714312658.98436
2021	59246878846.48436
2022	65244905533.20311
2023	54576939089.843735