Year	current US$
1960	108350000
1961	123420000
1962	149600000
1963	175340000
1964	183480000
1965	206140000
1966	234300000
1967	248050000
1968	262459999.99999997
1969	303142000
1970	355294000
1971	394051000
1972	438963000
1973	500346000
1974	792165000
1975	862330000
1976	846282000
1977	858493000
1978	938636000
1979	1179630000
1980	1448440000
1981	1539913000
1982	1569239000
1983	1411896000
1984	1422966000
1985	1391375000
1986	1284643000
1987	1306150000
1988	795454000
1989	964757372
1990	1509696893
1991	1694927947
1992	2023590665
1993	2187361708
1994	2403993186
1995	2530082120
1996	2387283069
1997	3006365541
1998	3398342481
1999	3492530150
2000	2720630923
2001	2583594995
2002	2593506507
2003	2653139085
2004	2991358586
2005	3412852635
2006	3901519640
2007	5636021314
2008	6682601669
2009	5636280970
2010	6467384564
2011	7715728275
2012	12375449573
2013	12785791497
2014	13592488305
2015	12136052288
2016	11696977859
2017	12724361214
2018	13232957116
2019	9841582633
2020	6497250527