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| Period | β coefficient | CI [95%] (Lower-Upper limit) | P value | Adjusted R2 | Speed of convergence (% per annum) |
|---|---|---|---|---|---|
| 1950–55 to 1980–85 | -0.0267 | (-0.0294–0.0239) | 0.000 | 0.66 | 5.4 |
| 1985–90 to 2010–15 | -0.0212 | (-0.0249–0.0175) | 0.000 | 0.40 | 3.0 |
| 1950–55 to 2010–15 | -0.0210 | (-0.0227–0.0194) | 0.000 | 0.77 | 2.2 |
