Year	current US$
1990	1696180004.65445
1991	1748602947.29967
1992	1901519454.19021
1993	1722862071.73846
1994	1691235333.33077
1995	1710947135.83527
1996	1488089366.42038
1997	1553240941.77505
1998	1422027011.1352
1999	1356272004.08585
2000	1335456898.73593
2001	1119870622.30893
2002	1007751615.30665
2003	1465159270.22359
2004	1754107939.78941
2005	1820567485.48174
2006	1786782693.83011
2007	1809470944.35529
2008	1661837052.30091
2009	1660620686.52686
2010	1978280849.54467
2011	1996892935.19566
2012	1870736543.65125
2013	1723855845.47356
2014	1653566200.71872
2015	1451760410.59123
2016	1290127250.28411
2017	1491793032.83098
2018	1531976754.72579
2019	1470712996.25573
2020	1328986613.86177