POPULATION DENSITY CHANGES OVER TIME
Singapore is one of the most densely populated lands on earth. Over time, the population density has increased greatly.
In 1990, the population of Singapore was at 3.047 million. The land area was 670 square km. After calculation human population density, it turned out to be 4547.8 people per square km.
In 2000, the population of Singapore rose to 4.0279 million. The land area was at 670 square km (there was no reclamation between 1990 and 2000). After calculating human population density, it turned out to be 6011.8 people per square km.
In 2010, the population rose again up to 5.0767 million. From 2000 to 2010, 30 square km of land had been reclaimed, increasing the land area to 700 square km. After calculating human population density, it turned out to be 7252.4 people per square km.
If we want to find the change of density yearly over time, we can calculate it by dividing the change in density by the time period. By calculating, we get these results:
The only thing this table is saying is that from 1990 to 2000, the average population density increased by 146.4 people per square km. From 2000 to 2010, the average population density increased by 124.06 people per square km. From 1990 to 2010, the average population density increased by 135.23 people per square km.
At the beginning, we wanted to know how the population density increased over 20 years, and we have just found that. Over 20 years, the population density has increased by 135.23 people per square km.