Year	current US$
1970	361.1973116802423
1971	398.092801722052
1972	462.6501586237809
1973	608.1872412210881
1974	816.5744882517911
1975	879.2811852054563
1976	859.729576641656
1977	884.7849792714704
1978	992.5089870902582
1979	1167.9592040760285
1980	1299.521889824066
1981	1314.485732010435
1982	1265.3588129829534
1983	1185.0413145905736
1984	1218.9317372444325
1985	1145.8512990560007
1986	1223.6517078924182
1987	1174.3785832968404
1988	1188.9406432285418
1989	1219.2566653163544
1990	1342.8830163179016
1991	1405.299162323511
1992	1523.5721126629776
1993	1579.091702381444
1994	1825.8708931956082
1995	1958.4558397788187
1996	2071.7699378156653
1997	2046.2746650309223
1998	1736.8399582640293
1999	1866.2621545658685
2000	1693.898919337007
2001	1643.2046737750918
2002	1700.27355324465
2003	2000.6615921258026
2004	2272.3223629557174
2005	2491.1376736831844
2006	2582.685028887677
2007	2811.7388682874
2008	2977.0483748007464
2009	2654.9208800616607
2010	2888.0825937550544
2011	3332.023366031793
2012	3493.210344200389
2013	3591.5883634225706
2014	3862.302535668756
2015	3735.4995227542386
2016	3878.325017909462
2017	4142.26772455685
2018	4298.998199049913
2019	4230.598092861901
2020	3703.0521963256197
2021	3648.416038012439
2022	3909.141664601867
2023	4194.687369385071