Marcelo Neri of the Getulio Vargas Foundation, which carried out the research, says it shows Brazil has at last become a middle-class country after decades of effort.

• 但是问题在于公共行业这一类的中产阶级是否有同样的企业家驱动力，同样的政治影响和支持长时间高经济发展的能力。