Year	constant 2010 US$
1997	23293691556116
1998	24038635416362.5
1999	24829379365379.1
2000	25774113843954.3
2001	26362214937158.5
2002	26883071027286.6
2003	27404372286744.1
2004	28147507691778.9
2005	29026790380773.4
2006	29817211117915
2007	30584088201165.7
2008	30853798038936.4
2009	30343967928977.3
2010	30935676143331.5
2011	31516002085327.6
2012	32029038828580
2013	32461020177538.3
2014	33070819698407.1
2015	33842500596232.3
2016	34432422562086.1
2017	35071067319634.5