Year	current US$
1994	1346000000
1995	1783800000
1996	1239200000
1997	1761900000
1998	1889200000
1999	1684800000
2000	6120480000
2001	1152890000
2004	3695560000
2005	1979363000
2006	1001361030
2008	2533556780
2012	5041860000
2013	3525990000
2017	1826880000
2018	2628290000
2019	3722700000
2022	1802200000