so, since that one doesn't quite work for sub TL7, what if we didn't make it flat TLx10, but instead, some constant plus TL x something.
for some reason google gave me Canada results first:
1920, average life expectancy was 60 (TL5)
1945, average life expectancy was 65 (TL6)
1980, average life expectancy was 75 (TL7)
2010, average life expectancy was 80 (TL8)
1820, average life expectancy was 40 (TL4)
1700, around 35? hard because Canada wasn't around so no longer comparing apples to apples (TL3)
1400, around 30? (TL2)
0 (TL1), around 25? TL1 has a really wide range though
TL0 is even harder to identify, so i'll skip it.
but this means roughly.. 22+7*TL?
1 -> 29
2 -> 36
3 -> 43
4 -> 50
5 -> 57
6 -> 64
7 -> 71
8 -> 78
That's not.. terrible.
so then:
9 -> 85
10 -> 92
11 -> 99
12 -> 106
13 -> 113
14 -> 120
15 -> 127
then assume that retirement is also something that improves with TL, so at TL8 its 84% of your life expectancy, but TL1 it would be 98%. So then retirement is 100-2*TL% of life expectancy.
1 -> 29, retire 28
2 -> 36, retire 35
3 -> 43, retire 40
4 -> 50, retire 46
5 -> 57, retire 51
6 -> 64, retire 56
7 -> 71, retire 61
8 -> 78, retire 66
9 -> 85, retire 70
10 -> 92, retire 73
11 -> 99, retire 77
12 -> 106, retire 81
13 -> 113, retire 84
14 -> 120, retire 86
15 -> 127, retire 89