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Table 4.
Correlation matrix.
| OPV | GDP | NR | RE | |
|---|---|---|---|---|
| OPVt | 1.00 | |||
| GDPt | −0.590 | 1.00 | ||
| NRt | −0.061 | 0.132 | 1.00 | |
| REt | −0.090 | 0.053 | 0.048 | 1.00 |