Year	current US$
1995	10079875017.3295
1996	13985236383.7025
1997	13666885319.3805
1998	14819019979.6119
1999	11926005828.5362
2000	9934210719.35481
2001	8976798696.72626
2002	6337233223.77684
2003	8271196267.41738
2004	6940449677.1071
2005	17293383185.0782
2006	19525530995.5301
2007	33148265023.3025
2008	43454480008.0131
2009	31204935294.6036
2010	26856904994.2191
2011	38535340412.3794
2012	37345425494.7928
2013	38931071804.0799
2014	45203756382.7346
2015	46327004978.4616
2016	42515877102.4703
2017	46601345694.5994
2018	56038695209.0163
2019	62760570080.4659
2020	64768172652.7216
2021	71178691901.2764