Year	current US$
1991	1599048009.436251
1992	1404544786.2434106
1993	1355075747.8182156
1994	1426671417.2253513
1995	1604625627.179316
1996	1578861444.876347
1997	1587332330.0053372
1998	1613701247.4459105
1999	2303130508.757966
2000	2172718129.400021
2001	1789716093.8986528
2002	3084832221.800217
2003	3117728293.1017466
2004	3625530921.699387
2005	3914690846.6319604
2006	3738336875.4163013
2007	4086680887.8412247
2008	4862589823.758566
2009	4895152160.562243
2010	5074769219.60681
2011	7752211162.944309
2012	12669140464.746325
2013	13997781555.482573
2014	15024028376.769482
2015	10728551022.130346
2016	9053287501.332342
2017	8582511319.65343
2018	11875190161.746414
2019	10618346229.321653
2020	9554283407.471388
2021	11597098163.904375
2022	15280730845.076561