Year	constant 2011 international $
1990	7448298778.96241
1991	8119097475.38406
1992	8132498100.18965
1993	8393548517.65949
1994	8492455314.43413
1995	9008023324.32719
1996	10070289100.8518
1997	10668144453.8712
1998	11446425078.6304
1999	12284926093.8712
2000	12403842933.5337
2001	13243732320.3576
2002	13858705575.248
2003	14936305733.7986
2004	15600879807.8067
2005	16997048383.8154
2006	18121005067.3761
2007	19103975465.1911
2008	20496961632.5083
2009	21091959818.5117
2010	21678846983.642
2011	22811297843.1351
2012	24749296210.0872
2013	26264256814.4614
2014	27040163272.9541
2015	27977543933.3688
2016	29497277048.8168
2017	31482511103.9883
2018	33685955001.0149