Year	current US$
2002	3376000000
2003	4069000000
2004	4931000000
2005	5772000000
2006	6702000000
2007	7803000000
2008	9228000000
2009	8164000000
2010	8068000000
2011	8930000000
2012	8174000000
2013	7792000000
2014	7614000000
2015	6766000000
2016	7041000000
2017	7695000000
2018	8283000000
2019	7967000000
2020	3890000000