|
| Years | P1 | P2 | P3 | P4 | Total |
Length of phases | Base years | 1961-1990 | 14 | 38 | 31 | 44 | 124 |
| periods | 2000-2030 | 12 | 36 | 31 | 43 | 119 |
|
| 2030-2050 | 9 | 35 | 30 | 40 | 112 |
Changes in length of |
| 2000-2030 | −2 | −2 | 0 | −1 | −5 |
phases |
| 2030-2050 | −5 | −3 | −1 | −4 | −13 |