Year	current US$
1960	223500000
1961	366100000
1962	405100000
1963	388900000
1964	458900000
1965	455900000
1966	419300000
1967	508800000
1968	556900000
1969	579400000
1970	598950000
1971	734210000
1972	808300000
1973	1102000000
1974	1433380000
1975	1688770000
1976	1592680000
1977	1716600000
1978	2347430000
1979	3392940000
1980	3566540000
1981	3181210000
1982	3151630000
1983	3176400000
1984	2782010000
1985	2942040000
1986	3831550000
1987	4390540000
1988	4730850000
1989	4948110000
1990	6319670000
1991	6889730000
1992	7583120000
1993	6953960000
1994	6817960000
1995	7523580000
1996	7600890000
1997	5856780000
1998	5580680000
1999	5515330000
2000	5030000000
2001	4989500000
2002	5324430000
2003	6784180000
2004	7534210000
2005	10082160000
2006	10434810000
2007	12290700000
2008	13980870000
2009	12079150000
2010	12985360000
2011	14092940000
2012	12939490000
2013	14228260000
2014	16566200000
2015	17940210000
2016	24735690000
2017	25005060000
2018	25670380000
2019	24122380000
2020	29320380000
2021	32455570000
2022	36444680000