Year	current US$
1970	5584007500
1971	6782256200
1972	7979320041.972718
1973	9796397346.200241
1974	11187718414.634148
1975	12778100609.756098
1976	13525388428.745434
1977	13933525180.722893
1978	17502936103.896103
1979	19211775616.43836
1980	19531412500
1981	19762075662.650604
1982	20547988470.588234
1983	21783970197.90454
1984	23596807057.48435
1985	22466664483.022163
1986	23746921046.316296
1987	24714712705.074398
1988	26992651715.039577
1989	26599988081.507114
1990	28034938962.765957
1991	23862628224.375595
1992	21760981486.48649
1993	22010768378.37838
1994	27876975405.405407
1995	29759817694.369972
1996	24524568700
1997	24882408100
1998	25287731200
1999	27849715200
2000	29943500000
2001	31178800000
2002	32979826200
2003	35340723500
2004	37552770500
2005	42010636100
2006	48263703703.7037
2007	53374259259.259254
2008	55325092592.59259
2009	55960185185.18518
2010	58237037037.03703
2011	67926000000
2012	72146000000
2013	76226000000
2014	79602100000
2015	86014000000
2016	90086000000
2017	95497000000
2018	98575000000
2019	101873800000