Year	current US$
1993	357000000
1995	616860000
1996	782610000
1997	822490000
1998	1308290000
1999	2308350000
2003	520490000
2004	1558300000
2005	1510240000
2006	1879810000
2007	2181820000
2008	1905330000
2009	1468480000
2010	1444920000
2011	1498420000
2013	1949970000
2014	2551360000
2015	2353520000
2016	2917800000
2017	3010760000
2018	2401120000
2019	2217350000
2020	1901280000
2021	2041060000
2022	2232060000