Year	current US$
1960	427000000
1961	505000000
1962	488000000
1963	549000000
1964	549000000
1965	618000000
1966	684000000
1967	790000000
1968	798000000
1969	891000000
1970	1120000000
1971	1312000000
1972	1607000000
1973	2131000000
1974	2658000000
1975	3192000000
1976	3315000000
1977	4404000000
1978	5691000000
1979	7143000000
1980	8398000000
1981	7678000000
1982	8063000000
1983	8592000000
1984	9642000000
1985	10358000000
1986	12658000000
1987	15999000000
1988	18723000000
1989	20667000000
1990	23743000000
1991	24224000000
1992	28331000000
1993	28992000000
1994	33996000000
1995	44705000000
1996	48339000000
1997	53348000000
1998	64330000000
1999	71239000000
2000	77413000000
2001	82835000000
2002	88265000000
2003	92755000000
2004	104788000000
2005	109657000000
2006	108726000000
2007	121543000000
2008	125719000000
2009	115928000000
2010	116497000000
2011	125740000000
2012	116773000000
2013	116637000000
2014	121057000000
2015	123361000000
2016	130864000000
2017	137359000000
2018	164794000000
2019	169625000000
2020	180104000000
2021	190658000000
2022	214156000000
2023	209499000000