Table 4 95% confidence intervals for out-sample forecasts by ARIMA models for Ghana, Niger, Nigeria, and Sierra Leone
Year | Ghana (ARIMA 3,2,1) | Niger (ARIMA 2,2,3) | Nigeria (ARIMA 1,0,0) | Sierra Leone (ARIMA 0,2,1) | ||||
|---|---|---|---|---|---|---|---|---|
Forecast | CI | Forecast | CI | Forecast | CI | Forecast | CI | |
2022 | 42.5 | 42.1鈥�42.9 | 113.7 | 112.7鈥�114.7 | 107.8 | 106.8鈥�108.9 | 99.9 | 95.8鈥�103.9 |
2023 | 40.9 | 40.1鈥�41.9 | 112.1 | 108.7鈥�115.5 | 104.7 | 102.5鈥�107.2 | 95.5 | 89.5鈥�101.4 |
2024 | 39.5 | 38.0鈥�40.9 | 110.6 | 103.4鈥�117.8 | 101.9 | 97.3鈥�105.9 | 91.0 | 82.9鈥�99.0 |
2025 | 37.9 | 35.8鈥�40.1 | 109.5 | 97.5鈥�121.5 | 98.9 | 93.2鈥�104.8 | 86.5 | 76.2鈥�96.9 |
2026 | 36.5 | 33.6鈥�39.4 | 108.8 | 91.3鈥�126.3 | 96.0 | 88.2鈥�103.9 | 82.1 | 69.2鈥�94.9 |
2027 | 34.9 | 31.3鈥�38.6 | 108.5 | 85.0鈥�131.9 | 93.1 | 83.1鈥�103.2 | 77.6 | 62.0鈥�93.2 |
2028 | 33.5 | 29.0鈥�37.9 | 108.5 | 78.8鈥�138.2 | 90.3 | 77.8鈥�102.7 | 73.2 | 54.7鈥�91.7 |
2029 | 31.9 | 26.6鈥�37.4 | 108.8 | 72.6鈥�144.9 | 87.4 | 72.4鈥�102.4 | 68.7 | 47.2鈥�90.2 |
2030 | 30.5 | 24.2鈥�36.8 | 109.5 | 66.7鈥�152.3 | 84.5 | 66.9鈥�102.2 | 64.3 | 39.5鈥�88.9 |
2031 | 28.9 | 21.7鈥�36.3 | 110.4 | 61.0鈥�159.7 | 81.7 | 61.2鈥�102.2 | 59.8 | 31.7鈥�87.9 |