Year	current US$
2000	996000000
2001	1361000000
2002	1362000000
2003	800000000
2004	967000000
2005	2090000000
2006	1893000000
2007	2471000000
2008	2477000000
2012	1765000000
2013	2269000000
2014	2897000000
2015	2848000000
2016	2808000000
2017	3413000000
2018	4471000000
2019	5680000000
2020	3203000000