Year	constant 2011 international $
1991	509637859480.363
1992	448963370805.586
1993	376545114543.118
1994	295360819151.213
1995	257193483044.943
1996	232212570250.993
1997	225182585744.024
1998	219343718730.217
1999	217122702773.525
2000	229413290639.526
2001	253631487661.646
2002	267754522494.129
2003	293997033724.399
2004	329313235160.452
2005	339506217074.569
2006	363032818957.618
2007	390667807116.254
2008	402151369904.932
2009	338924533040.463
2010	353888400233.234
2011	369725094277.308
2012	372927127375.231
2013	372722369412.228
2014	350255535525.808
2015	315910655564.913
2016	324340512017.15
2017	325869190489.231
2018	337913809606.478