Year	constant 2011 international $
1997	718.676201114642
1998	747.894619243915
1999	727.268984012736
2000	728.994260408387
2001	706.893358860972
2002	716.910982527272
2003	683.10486360189
2004	688.875659267728
2005	681.600703428022
2006	701.828723359411
2007	704.390676675187
2008	715.85650349453
2009	714.130562073075
2010	729.733038645705
2011	733.451343109953
2012	745.97753523065
2013	761.271658842814
2014	766.518952479143
2015	715.107413552595
2016	688.796840231944