Variable
|
ZA
|
Perron
|
---|
Levels
|
First difference
|
Levels
|
First difference
|
---|
Statistics
|
Break Date
|
Statistics
|
Break Date
|
Statistics
|
Break Date
|
Statistics
|
Break Date
|
---|
NER
|
−3.065
|
1997 M11
|
−16.677*
|
1998 M02
|
−2.872
|
1997 M08
|
−18.800*
|
1998 M01
|
OP
|
−4.057
|
2014 M05
|
−10.379*
|
2008 M07
|
−4.167
|
2014 M05
|
− 16.386*
|
2008 M10
|
PO
|
−3.995
|
2006 M07
|
−12.091*
|
2001 M03
|
−3.989
|
2006 M06
|
−12.626*
|
2008 M10
|
RUB
|
−3.224
|
2003 M08
|
−10.011*
|
2011 M03
|
−3.199
|
2003 M07
|
−10.266*
|
2008 M11
|
NG
|
−4.035
|
2014 M05
|
−10.248*
|
2012 M08
|
−4.035
|
2014 M05
|
−16.092*
|
2009 M04
|
- Note * and ** represent 1% and 5% significance level