Year	constant 2011 international $
1990	14715475610.4513
1991	15026125894.693
1992	14215551868.3618
1993	13480635104.4514
1994	11908011114.7476
1995	13141462520.7609
1996	13721287224.8324
1997	14072334712.4463
1998	14357418072.5851
1999	14720964992.1874
2000	14909511270.5427
2001	14678837363.4237
2002	14551554550.7869
2003	14578520063.7459
2004	14102883789.2509
2005	14240046559.4583
2006	14764089246.3233
2007	15257694411.2637
2008	15397275120.2046
2009	15899662515.2607
2010	15057726795.9469
2011	15929101063.5587
2012	16431713843.4356
2013	17047784788.0354
2014	17574674431.8058
2015	17766471843.4452
2016	18059758867.4454
2017	18276465643.0136
2018	18518897046.2408