Year	constant 2010 US$
1990	9384691804.9336
1991	7263751457.2404
1992	9348448124.53276
1993	8703405203.98079
1994	6875690111.78218
1995	5198021723.93626
1996	4938120638.56801
1997	4893677551.66219
1998	3968772493.99268
1999	4818089808.71923
2000	4663910934.35072
2001	5461439704.1999
2002	5636205776.13138
2003	5760202303.20882
2004	5754442099.01012
2005	6163007489.13099
2006	6532787938.47885
2007	7114206065.00346
2008	6673125288.97325
2009	7553977827.11772
2010	6677716399.17207
2011	8447311244.95266
2012	6977479088.3309
2013	7758956746.22395
2014	7859823183.92486
2015	8134916995.36224
2016	8574202513.1118
2017	8848576993.53138
2018	9149428611.31145