Year	constant 2010 US$
1981	82616960841.3361
1982	76319105109.5543
1983	64421190985.2605
1984	63592048205.0676
1985	67180017928.3126
1986	65343385375.3146
1987	73341283280.1237
1988	76574296684.9281
1989	70294266403.2521
1990	66762957011.3229
1991	64502012675.6845
1992	66305960357.7883
1993	59170623793.3259
1994	54225379771.3822
1995	51895117631.0073
1996	53776669823.818
1997	53063295221.376
1998	51585966705.5392
1999	54164345719.8063
2000	54073732343.6001
2001	54779945129.1654
2002	59965750852.9156
2003	56665753176.8057
2004	57098141085.7387
2005	59377587392.4256
2006	61027099298.8505
2007	64078902818.8995
2008	67335144658.5894
2009	70350948240.6004
2010	72226224631.4108
2011	79076023279.7658
2012	85381086571.3501
2013	95164328648.253
2014	101968547416.593
2015	103480393185.445
2016	104629696109.297
2017	106829542789.13
2018	108541024854.168