Year	current US$
1960	1494000000
1961	1537000000
1962	1669000000
1963	1908000000
1964	2107000000
1965	2320000000
1966	2453000000
1967	2538000000
1968	2640000000
1969	3019000000
1970	3356000000
1971	3680000000
1972	4432000000
1973	6248000000
1974	7719000000
1975	8712000000
1976	9115000000
1977	10065000000
1978	11883000000
1979	14696000000
1980	16749000000
1981	16095000000
1982	15397000000
1983	16053000000
1984	15980000000
1985	17089000000
1986	21286000000
1987	25675000000
1988	28514000000
1989	29570000000
1990	36870000000
1991	37824000000
1992	41577000000
1993	37754000000
1994	42343000000
1995	50906000000
1996	51415000000
1997	49273000000
1998	49013000000
1999	50296000000
2000	51292000000
2001	51705000000
2002	57495000000
2003	66512000000
2004	77079000000
2005	85121000000
2006	92558000000
2007	103171000000
2008	116923000000
2009	93984000000
2010	96440000000
2011	111864000000
2012	105469000000
2013	110949000000
2014	111493000000
2015	95457000000
2016	95326000000
2017	102506000000
2018	109696000000
2019	111076000000
2020	108454000000
2021	125945000000
2022	131793000000
2023	136631000000