Year	current US$
2002	312000000
2003	332000000
2004	357000000
2005	367000000
2006	375000000
2007	384000000
2008	407000000
2009	398000000
2010	401000000
2011	411000000
2012	420000000
2013	446000000
2014	463000000
2015	460000000
2016	463000000
2017	471000000
2018	487000000
2019	509000000
2020	533000000
2021	602000000
2022	621000000