Context: The return of Soviet immigrants to their countries of origin has brought the proportion of Estonians in Estonia back above 70%. And again as in Latvia, today many of the remnant non-Estonians in Estonia have adopted the Estonian language; about 40% at the 2000 census.

Question: Following the departure of the Soviet immigrants what was the percentage of Estonians in Estonia?
Answer: above 70%

Question: When Soviet immigrants joined Estonia, how many Estonians lived in Estonia?
Answer: Unanswerable

Question: How many native Estonians adopted Estonian? 
Answer: Unanswerable

Question: What percentage of Estonians spoke Russian in 2000?
Answer: Unanswerable

Question: What percentage of Soviets spoke Estonian? 
Answer: Unanswerable

Question: What percentage of Latvians spoke Russian?  
Answer: Unanswerable