Year	current US$
1995	14556748812.429
1996	16663417269.2981
1997	21355374652.7184
1998	19246505644.7094
1999	21794722362.7203
2000	25929919280.8658
2001	28038999949.9277
2002	32082247429.4047
2003	30921291634.1513
2004	38131994025.7798
2005	40642083268.3732
2006	45951875959.2313
2007	55316981844.5539
2008	66029934934.4767
2009	69871988294.9079
2010	87620628648.045
2011	108699606321.617
2012	143100544454.622
2013	172865148705.772
2014	275975237831.374
2015	298734679276.597
2016	301534910379.751
2017	312719727452.701