| Variables |
Proxy |
Unit of measurement |
Used by |
| Carbon emissions (C) |
“Carbon emissions from solid fuel consumption” |
ktoe |
Ahmad et al., (2017) Brown and McDonough (2016) |
| Domestic Investment (K) |
“Domestic Investment” |
US$(2010=100) |
Bekhet and Al-Smadi (2017)Rafindadi et al. (2018) |
| Private Investment (D) |
“Domestic Credit to private sector” |
US$(2010=100) |
Charfeddine and Khediri (2016)Katircioglu and Taspinar (2017) |
| Foreign Investment (F) |
“Inflow FDI” |
US$(2010=100) |
Tamazian and Rao (2009)Tamazian et al. (2010) |
| “Gross Domestic Product (Y)” |
“Gross Domestic Product” |
US$(2010=100) |
Ahmad et al. (2017)Brown and McDonough (2016) |
