Year	current US$
1992	5300000000
1993	13683333333.333332
1994	12575630252.10084
1995	7551438434.9827385
1996	7441153846.153847
1997	9277619414.483822
1998	9727444179.492739
1999	7481014841.556357
2000	9221218206.157965
2001	8685107913.669064
2002	9833247716.257566
2003	12296967244.682562
2004	17182653939.803543
2005	17850098894.058
2006	23742026336.40467
2007	30430179676.43331
2008	41713443175.43531
2009	30401389162.385204
2010	36940382943.14943
2011	49106586821.532455
2012	48810109273.23106
2013	46436146192.87054
2014	43907043162.723366
2015	32689333598.72761
2016	29922651356.101818
2017	36435061702.32806
2018	41384800216.72471
2019	42353341622.91213
2020	35547585132.6563
2021	45415029493.731964
2022	42031948516.812004
2023	47555056777.56164