Year	current US$
1992	8045000000
1993	7817000000
1994	10305000000
1995	13128000000
1996	14401000000
1997	14232000000
1998	12637000000
1999	11582000000
2000	14573000000
2001	16265000000
2002	17957000000
2003	23067000000
2004	32666000000
2005	34228000000
2006	38368000000
2007	49296000000
2008	66954000000
2009	39782000000
2010	51478000000
2011	68460000000
2012	68530000000
2013	64338000000
2014	53901000000
2015	38127000000
2016	36360000000
2017	43265000000
2018	47336000000
2019	50054000000
2020	49192000000
2021	68073000000
2022	44134000000
2023	36040000000