Year	current US$
2000	3019000000
2001	3321000000
2002	3651000000
2003	3956000000
2004	4472000000
2005	6186000000
2006	8827000000
2007	11273000000
2008	13288000000
2009	10347000000
2010	11818000000
2011	13206000000
2012	15072000000
2013	16188000000
2014	15848000000
2015	16637099609.375
2016	17127259765.625
2017	17644699218.75
2018	18004099609.375
2019	18382000000
2020	15085000000