Year	constant 2011 international $
1990	2674.69885386632
1991	2699.17505189439
1992	2688.18995528105
1993	2751.56810418502
1994	2595.73180073762
1995	2779.48029835972
1996	3046.76809171246
1997	2839.6062945134
1998	2866.20262225456
1999	3014.59078736284
2000	2895.73718453095
2001	2780.49090376318
2002	2901.32120103878
2003	2978.09210477871
2004	3058.33677584026
2005	3220.96966678778
2006	3511.34897026748
2007	3535.75925313197
2008	3521.97008823787
2009	3461.22494272193
2010	3397.54441152542
2011	3378.7983574915
2012	3449.01928378786
2013	3566.07655703607
2014	3628.9712676479
2015	3622.37107008819
2016	3636.20017829628
2017	3681.97667366818
2018	3746.08365414055