Pathairat Pastpipatkul Faculty of Economics, Chiang Mai University   239 HuayKaew Road, Suthep, Muang Chiang Mai, Chiang Mai 50200 Thailand   pathairat.past@cmu.ac.th             JEL Areas: E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General J0 : Labor and Demographic Economics: General