Year	current US$
1995	2390000000
1996	2813000000
1997	3033000000
1998	2941000000
1999	2700000000
2000	2484000000
2001	2204000000
2002	2713000000
2003	3144000000
2004	3605000000
2005	4402000000
2006	4287000000
2007	5426000000
2015	5887000000
2016	5597000000
2017	6918000000
2018	7640000000
2019	7601000000
2020	2107000000