Van Le University of Economics Ho Chi Minh City (UEH)   59C Nguyen Dinh Chieu Vo Thi Sau Ward District 3 Ho Chi Minh City, 70000 Vietnam   Levan@ueh.edu.vn             JEL Areas: O4 : Economic Growth and Aggregate Productivity: General G1 : General Financial Markets: General (includes Measurement and Data)