Variables | Levels | First difference | Critical Value |
FDI | −2.670 | - | −2.570 |
lnInfrastQuality | −0.951 | −3.932 | −2.570 |
lnNaturalResEnd | −2.129 | −5.143 | −2.570 |
lnMarketSize | −1.473 | −4.716 | −2.570 |
lnTradeOpenness | −1.568 | −5.150 | −2.570 |