Year	constant 2011 international $
1990	2536.97560165782
1991	2164.07079662456
1992	2175.34091137973
1993	2131.28174067288
1994	2075.88555349611
1995	2078.29914934722
1996	2143.4326823877
1997	2220.42390956286
1998	2348.92711704584
1999	2409.27062240319
2000	2412.53946484973
2001	2456.8666482935
2002	2512.22832924711
2003	2404.57336423134
2004	2657.24225700903
2005	2752.37959422488
2006	2869.55846339609
2007	2965.91933017212
2008	3078.71913245492
2009	3145.38065833998
2010	3251.23950376545
2011	3306.58941016777
2012	3398.66514914829
2013	3500.87258815384
2014	3558.31721027732
2015	3565.60991210513
2016	3582.6553506647
2017	3544.7543843847
2018	3527.65660046093