Year	current US$
1990	945.3239016650817
1991	1055.3830393053945
1992	1244.2602279061375
1993	1450.2758541153692
1994	1801.5286891355076
1995	794.6392781653759
1996	390.99772182518007
1997	399.6975880577299
1998	359.0486036166646
1999	421.7231149786576
2000	519.5916392548237
2001	514.692340729636
2002	543.9000683988652
2003	583.3696527490264
2004	668.8546190373773
2005	784.7579805151929
2006	867.8359626122699
2007	956.2304766616677
2008	1153.5364221845048
2009	1045.8055779712865
2010	1249.0630852985616
2011	1284.6176353928724
2012	1349.9906098944884
2013	1497.747941027304
2014	1557.6014056318193
2015	1488.4162886442048
2016	1069.8170094458126
2017	893.7165009278146
2018	701.7148646737965
2019	693.8165076401134
2020	626.309168909111
2021	583.8490413425651
2022	698.850349965249
2023	533.3671234964637