Year	current US$
1984	387.5746915105681
1985	390.7367854439025
1986	406.485087413321
1987	437.93612447942695
1988	470.3185900808393
1989	457.7807971950746
1990	467.45769507625624
1991	513.6289105275413
1992	423.9273220610528
1993	361.8396159628335
1994	316.1417714706195
1995	300.5991354344063
1996	272.7273005568556
1997	269.20442423066226
1998	259.6655311122734
1999	255.2257502059084
2000	262.7800438618083
2001	271.95041166395697
2002	285.5118788042991
2003	307.9863219932476
2004	355.0066302640202
2005	403.4176976125544
2006	451.11556507657826
2007	518.055365003156
2008	597.7012288833204
2009	652.4164350794738
2010	687.9476827201822
2011	701.2694009574301
2012	680.9170726666962
2013	682.2955400177773
2014	703.0233629000475
2015	686.4499528663551
2016	660.1728533892673
2017	642.0328476649447
2018	649.175603321088
2019	672.3506937544278
2020	653.8566814698123
2021	673.5256807748511
2022	718.0127808630868
2023	769.2361346791979