Year	current US$
1992	3495000000
1993	2539000000
1994	3066000000
1995	5564000000
1996	6939000000
1997	8689000000
1998	8549000000
1999	6674000000
2000	8646000000
2001	8286000000
2002	9092000000
2003	11558000000
2004	16491000000
2005	16708000000
2006	22351000000
2007	28693000000
2008	39381000000
2009	28569000000
2010	34884000000
2011	45730000000
2012	46404000000
2013	42948000000
2014	40502000000
2015	29941000000
2016	27464000000
2017	34231000000
2018	38409000000
2019	39477000000
2020	32767000000
2021	41387000000
2022	38311000000
2023	43256000000