Year	current US$
1995	4422757285.010854
1996	4245293204.991921
1997	4563721660.62873
1998	4664602722.2050495
1999	4870963354.408633
2000	5118278498.15845
2001	4740785820.842787
2002	4638409267.151962
2003	6366600631.263052
2004	7454375621.603487
2005	9095631488.053524
2006	10891986611.01687
2007	12282357127.429152
2008	13492776830.401356
2009	12173692909.848711
2010	15220695813.751741
2011	16038888577.391544
2012	14297265463.811617
2013	13297791368.186224
2014	13730114524.508501
2015	13529345035.571283
2016	12785958383.57738
2017	13833871656.693954
2018	13948520114.488821
2019	13285421768.395496