Year	constant 2010 US$
1991	36421071.5848381
1992	42307544.0294611
1993	44669047.1722078
1994	54192874.4025437
1995	60486906.4037755
1996	69470967.6146511
1997	69684003.1774101
1998	80180820.6882964
1999	76669130.6431271
2000	81704558.4500678
2001	65657151.5014488
2002	73403966.6885658
2003	70928756.6633815
2004	70782703.4883755
2005	75150629.1897231
2006	73386203.7345897
2007	73802866.555351
2008	82802827.1751998
2009	81962608.1488384
2010	90415284.6305736
2011	94851897.7501271
2012	98703897.221089
2013	100461097.609678
2014	108241866.879799
2015	111199659.133574
2016	102922158.546214
2017	117651341.181002
2018	134645097.309345