Year	current US$
1970	572.7346624008302
1971	683.8166507457642
1972	791.9455324560988
1973	958.5025218123519
1974	1080.5228539872655
1975	1212.4512589669555
1976	1271.5875134926218
1977	1299.9639198448474
1978	1624.5038780698246
1979	1770.6466506812528
1980	1781.1533254465671
1981	1792.8698187430343
1982	1850.6684969084984
1983	1948.6535873117487
1984	2093.6573220845603
1985	1961.4910301012883
1986	2057.1352633040756
1987	2119.9802986766035
1988	2288.666052629478
1989	2234.6680809161744
1990	2344.967852278153
1991	1977.8346366810526
1992	1792.5841873188801
1993	1812.2353183231537
1994	2280.8793467635273
1995	2398.3150849956937
1996	1953.98052522712
1997	1974.6351919486488
1998	2009.1969326462117
1999	2198.789821063435
2000	2339.4706575958166
2001	2440.8921036120605
2002	2583.58767232343
2003	2761.937499422022
2004	2918.7971534727735
2005	3268.756272325952
2006	3746.362385796683
2007	4028.619070297706
2008	4234.178979916746
2009	4322.539275071472
2010	4441.405013197094
2011	5165.974651561426
2012	5492.497896071911
2013	5818.516280773362
2014	6082.4117096519285
2015	6607.276524858891
2016	6911.031839935039
2017	7308.859410764189
2018	7518.3298348914805
2019	7811.86924542692