Year	current US$
1984	1533393384.37872
1985	2094493019.53874
1986	1547905846.39387
1987	922013659.863181
1988	483472906.850221
1989	583919210.573416
1990	701800512.359403
1991	818713386.56688
1992	886623560.879601
1993	1051315470.19113
1994	1217619186.00652
1995	1338153992.03581
1996	1437613186.08816
1997	1313157218.57785
1998	930106567.292213
1999	1138524051.03541
2000	1323835382.5537
2001	1392077139.83449
2002	1406750390.49717
2003	1532509164.16715
2004	1844026559.17127
2005	2173707644.42235
2006	2538506517.71966
2007	3181051825.29735
2008	3929789380.83222
2009	4395122128.02248
2010	4929347018.41513
2011	6049699852.50695
2012	7520362723.16441
2013	9005963649.31293
2014	10211442555.3052
2015	11176611403.549
2016	12348136493.2957
2017	12957711600.1576
2018	13926946476.7605
2019	14119009460.884
2020	14168719586.3724
2021	13698049433.2043