Year	current US$
1993	1740800000
1994	6084100000
1995	9185670000
1996	14248100000
1997	10817110000
1998	10430790000
1999	10582930000
2000	9746160000
2001	8150100000
2002	10256370000
2003	15507730000
2004	26891360000
2005	34886410000
2006	44372130000
2007	68913190000
2008	40912350000
2018	26962050000
2019	26313100000
2020	26613600000
2021	37469270000
2022	28808940000