Year	current US$
1970	122193988.128841
1971	132971862.326852
1972	147385831.892374
1973	175748065.353171
1974	211926399.31656
1975	222225619.254355
1976	260636759.239488
1977	333138646.135064
1978	366765937.283029
1979	470036079.620103
1980	563643257.845566
1981	897603156.818233
1982	1033301464.65113
1983	1087931290.486
1984	1063665618.44521
1985	963362940.578323
1986	896251071.651619
1987	859582513.07569
1988	974156220.444797
1989	1005508940.92978
1990	1047399165.50591
1991	1035900400.96612
1992	1797177386.9678
1993	1741265439.26479
1994	2005326017.36994
1995	2272775077.41431
1996	2567630145.9967
1997	3229472758.52463
1998	2994668681.25408
1999	2870136455.21228
2000	3587914362.03466
2001	3792458781.6057
2002	4048915040.89839
2003	3787616800.45946
2004	4565896657.12437
2005	5817840471.21912
2006	6261463238.06168
2007	7433603369.57219
2008	8277331295.56363
2009	8839314732.58972
2010	10767627385.7862
2011	10456137166.1544
2012	11379887983.4398
2013	13542563500.9673
2014	12848811573.7914
2015	9811037258.70636
2016	9813647652.47923
2017	10772128801.063
2018	12989406914.5207
2019	12369097354.1267
2020	11552274426.0477
2021	13338478597.8532