Year	current US$
1995	630000000
1996	681000000
1997	555000000
1998	493000000
1999	465000000
2000	441000000
2001	649000000
2002	742000000
2003	876000000
2004	931000000
2005	1282000000
2006	1655000000
2007	2352000000
2008	3096000000
2009	2541000000
2010	2334000000
2011	2515000000
2012	2365000000
2013	2702000000
2014	2642000000
2015	2480000000
2016	2812000000
2017	3024000000
2018	3318000000
2019	3350000000
2020	1303000000