4. We compared the effect of a very young age-structure in 1947 with

>the very old age structure in 2100 using the Total Dependency

>Ratio and the Support Ratio. The SR calculation suggested that

>indeed the aged population in 2100 would be a greater economic

>burden than the young population in 1947. But the TDR calculation

>did not. What feature of the consumption profile do you think is

>responsible for this result? Explain.

> 5. Our data for Japanese consumption and production ends at age 90

>(and here we assumed both were zero after this age). If we extended

>both schedules observed at age 90 out to age 110 ...(Hint: look at

>your graph of the age schedules)

> 5.1How will the SR change? Why? Explain.

> 5.2Would optimal fertility be higher or lower?