Year	current US$
1975	18450120.93
1976	24019487.38
1977	45048793.79
1978	104392875.7
1979	188640701.3
1980	383128845.2
1981	477864776.6
1982	618736022.9
1983	846039184.6
1984	893287170.4
1985	877258728
1986	795232543.9
1987	841855346.7
1988	926754028.3
1989	943207946.8
1990	973244506.8
1991	1019360107
1992	444564971.9
1993	1111689453
1994	1280921387
1995	1695279817.21427
1996	1805949705.36302
1997	1658406238.36594
1998	1424466819.78866
1999	1460133613.76863
2000	1696785433.37549
2001	1252447488.20915
2002	1379995429.498
2003	1607350389.40425
2004	1621875956.8177
2005	1187020000
2006	1333360000
2007	1634850000
2008	1898410000
2009	3808000000
2010	4433160000
2011	5255620000
2012	5656788795
2013	6584860455.04827
2014	6524114891.68417
2015	5894665233.42878
2016	6270025972.10662
2017	6720117053.70659
2018	7466081911.79321
2019	8162162551.48331
2020	8256962268.44208
2021	9064843602.60467
2022	8916777158.17364
2023	9800000000