Year	current US$
2002	36919248407.0897
2003	43353534702.5847
2004	54844744844.037
2005	56968683533.0825
2006	61205796079.7527
2007	75103436760.687
2008	73419423329.8418
2009	54622333324.4616
2010	55803949116.5868
2011	50420676805.439
2012	53477327196.6444
2013	53952718498.7807
2014	58596622665.7935
2015	52826831977.9402
2016	54440137459.8712
2017	59661327957.8573
2018	60292774519.2657
2019	62373694081.9254
2020	55599559084.5295
2021	72713207249.5842