Year	current US$
1992	900000000
1993	1000000000
1994	2145000000
1995	1880000000
1996	1695000000
1997	1000000000
1998	590000000
1999	1187000000
2000	2506000000
2001	2700000000
2002	2850000000
2003	3632000000
2004	3870000000
2005	4944000000
2006	7156000000
2007	8932000000
2008	11945000000
2009	5000000000
2010	6500000000
2011	13000000000
2012	16500000000
2013	16800000000
2014	17500000000
2015	10000000000
2016	6964000000
2017	7458000000
2018	9760000000
2019	10605000000
2020	6492000000
2021	9377000000
2022	13425000000
2023	9917000000