Year	current US$
1960	406800000
1961	456800000
1962	421000000
1963	414500000
1964	493300000
1965	472000000
1966	486000000
1967	488440000
1968	416640000
1969	477490000
1970	482070000
1971	622480000
1972	672910000
1973	648600000
1974	786910000
1975	904340000
1976	885180000
1977	1114480000
1978	1465290000
1979	2156670000
1980	1854150000
1981	2191580000
1982	1800230000
1983	1610150000
1984	1429550000
1985	1529790000
1986	1737130000
1987	1871100000
1988	2644850000
1989	2586750000
1990	2638140000
1991	3200850000
1992	3243100000
1993	2920180000
1994	3196980000
1995	3202210000
1996	3198650000
1997	3433100000
1998	3863510000
1999	3426250000
2000	4501260000
2001	4566200000
2002	4929040000
2003	6261750000
2004	7904700000
2005	10771700000
2006	12459020000
2007	9848530000
2008	11499870000
2009	11282610000
2010	13052970000
2011	13832360000
2012	13891440000
2013	17871350000
2014	19263210000
2015	18552850000
2016	18052800000
2017	18093340000
2018	19449180000
2019	19344600000
2020	19253430000
2021	16277780000
2022	15761320000