Year	current US$
1995	2582000000
1996	2831000000
1997	2890000000
1998	2949000000
1999	3010000000
2000	3460000000
2001	3198000000
2002	3102000000
2003	4463000000
2004	6170000000
2005	7493000000
2006	8634000000
2007	10730000000
2008	11832000000
2009	11136000000
2010	14490000000
2011	17708000000
2012	17972000000
2013	18397000000
2014	19700000000
2015	21013000000
2016	22427000000
2017	27365000000
2018	28568000000
2019	30720000000
2020	13036000000