Year	current US$
1991	4.580441597823792
1992	128.19141807881294
1993	585.966246044659
1994	943.1847751103322
1995	666.6485665629559
1996	1017.1954907379699
1997	759.8103393358076
1998	661.0056854177369
1999	922.367936357848
2000	872.6244381109275
2001	1209.4900658920571
2002	988.7313679274771
2003	1004.1589968522516
2004	766.076228455123
2005	944.8350432199749
2006	963.1825447073916
2007	1019.8845915757313
2008	838.3315908652671
2009	1120.9070684735882
2010	592.7240998788313
2011	1210.896580585687
2012	1323.6380599715055
2013	1318.5832363235734
2014	1073.2499462157873
2015	743.545699783015
2016	462.4062026932427
2017	888.7983476037209
2018	890.5696518992085
2019	830.8568124648929
2020	1530.961811881728
2021	1155.8281506115566
2022	1317.3154355983324