Year	current US$
1977	134200000
1978	100300000
1979	99400000
1980	91700000
1981	97000000
1982	82700000
1983	100700000
1984	122900000
1985	129600000
1986	159100000
1987	160500000
1988	138100000
1989	58000000
1990	73300000
1991	76600000
1992	115600000
1993	106200000
1994	159400000
1995	207300000
1996	239000000
1997	226700000
1998	253000000
1999	318700000
2000	334100000
2001	346200000
2002	336100000
2003	353300000
2004	385100000
2005	423600000
2006	557900000
2007	650400000
2008	743500000
2009	663700000
2010	693200000
2011	820700000
2012	871000000
2013	1045400000
2014	958600000
2015	978700000
2016	951200000
2017	984200000
2018	913300000
2019	808000000
2020	593600000
2021	845300000
2022	1088700000
2023	1102300000