Year	constant 2010 US$
2008	223913844.753687
2009	233047733.49742
2010	240699938.195303
2011	246142025.015926
2012	225410126.67191
2013	208002163.867208
2014	180410725.295159
2015	185468888.072374
2016	178406437.418358