Year	constant 2011 international $
1990	1109.24751666948
1991	1166.02338681449
1992	1219.76607839048
1993	995.692024352539
1994	1061.51002679657
1995	1039.5169425902
1996	1027.24623796162
1997	1048.79578054466
1998	1083.2231076395
1999	1037.95675803481
2000	991.626463522323
2001	1066.09701267718
2002	1112.86855231208
2003	1228.3945141978
2004	1580.64845616282
2005	1788.14499460607
2006	1737.69408926978
2007	1734.67501996407
2008	1729.19609005963
2009	1743.42598034127
2010	1914.73584783321
2011	1852.93815588829
2012	1950.6542205937
2013	1993.89434104213
2014	2062.34506917925
2015	2052.2236152887
2016	1864.30218834915
2017	1753.77187602216
2018	1746.4820747796