| Research period | Evaluation data | ||||||
| Base period | 1961-1990 | Sik + Sim | Sik∙pik + Sim∙pim | ||||
| 107,400 | 36,721.2 | ||||||
| Evaluation period | Evaluation period | Sjk | Sjk ∙ pjk | Sjm | Sjm ∙ pjm | Sjl | Sjl ∙ pjl |
| 1966-1995 | 11,000 | 440 | 128,200 | 51543 | 100 | 12 | |
| 1971-2000 | 10,100 | 393.9 | 129,100 | 51,716.6 | 100 | 7.48 | |
| 1976-2005 | 11,400 | 424.8 | 127,900 | 51,433.6 | 400 | 29.9 | |
| 1981-2010 | 13,200 | 467.4 | 126,200 | 50,771.2 | 1700 | 118.6 | |
| 1986-2015 | 14,300 | 508.3 | 125,800 | 48,957.9 | 2230 | 208.8 | |