Year	constant 2010 US$
1995	4742683188.01794
1996	6010389166.95002
1997	6282941151.38176
1998	7336437367.60533
1999	6954589903.76866
2000	7140596047.68086
2001	8257337504.96479
2002	8481185104.44159
2003	9487485455.16591
2004	11482529586.0222
2005	13418385187.9277
2006	16288363980.9641
2007	19114276523.4914
2008	17063030440.8332
2009	11651636073.8724
2010	13097832087.9273
2011	15983465578.0368
2012	16843557415.3355
2013	16905209373.7749
2014	17106833130.8755
2015	17470631338.2221
2016	18243697893.348
2017	19865537754.3693
2018	20879680022.2992