Variables	Test statistics	Critical value			Order of Integration
Variables	Test statistics	1%	5%	10%	Order of Integration
RGDP	−6.493484	−3.632900	−2.948404	−2.612874	I(1)***
ESR	−5.943360	−3.632900	−2.948404	−2.612874	I(1)***
FSR	−4.396111	−3.632900	−2.948404	−2.612874	I(1)**
ICTSR	−4.093285	−3.626784	−2.945842	−2.611531	I(0)**