Year	constant 2010 US$
1992	21353038121.5904
1993	17045013346.3203
1994	13063428328.1152
1995	11727596562.9509
1996	12425260005.5791
1997	14052315852.037
1998	15825211664.0227
1999	16624222511.6246
2000	18515807895.3374
2001	20542263427.2026
2002	22426188552.8407
2003	24973279792.3692
2004	28559476699.4072
2005	32690153385.3515
2006	37505529758.7896
2007	41564987957.2665
2008	48836209248.6074
2009	46440242599.1999
2010	52248776949.9765
2011	59704963109.159
2012	62605884095.4091
2013	62645757254.8564
2014	64187531028.5111
2015	61299434074.5645
2016	57864227564.2984
2017	59794579655.2816