The figures below shows that, the population of poverty stricken people (earning below 2000$) was 30% and of those earning above it was 70%. The average income was 4800$ at that time.
Figure 1: Population and income before 40 years.
The figure below shows that, the population distribution stayed the same though the average income increased to 7600$.
Figure 2: Population and income after 40 years.
Empirics
Since, in the WWII, use of heat seaking missiles (missiles that most likely hits the part of the plain with highest temperature, usually engine) was not common, the places where planes were used to hit were ...