| GHE = −0.683 GDP + 0.5349707, R2 = 46.6% |
| FR = 0.256 GGHE-D + −0.786 GDP + 0.0450516, R2 = 95.5% |
| BCG = −0.639 GGHE-D + 0.327 OOP + 0.2451441, R2 = 75.5% |
| MMR = 0.961FR + −0.071 OOP + 0.0075514, R2 = 99.3% |
| IMR = +1.03FR + 0.156MMR + 0.192GDP + 0.0005578, R2 = 99.5% |