Can you imagine, approximately 80 million people are added to the world’s population every year, all thanks to highly populated countries. If 80 million is put together then it constitutes the total population of countries like Germany, Vietnam or Ethiopia.

It is has been a gradual process which started 2,000 years ago and is going on till now. Almost 2,000 years ago, the world’s populace was 300 million, 1,800 years back it was publicized that population has touched one billion and then in 1927, an addition one billion was found and the population read two billion.

Increase remained like this and by 50s; the world population has already increased by another two billion. Let’s take the story in fast-forward mode- In 2011; the world’s population crossed seven billion. Prediction is that the rise would remain like this and by 2100; the population would be about 10 billion.

Major contributors to this unwanted growth are highly populated countries. Young population, in the age group of 25 years, forms 43% of the total world’s population. Population got a push during the Baby Boom of the 1950s and 60s, revealed experts.

There are many other reasons for increase in the population, medical advancements have come, facilities have been improving and due to which balance between birth rate and death rate has got imbalanced.

Even, average life expectancy has increased from 48 years to 68% and fertility rate has also increased. Birth rate per woman differs according to the status of a nation as in a developed nation; the fertility rate is 1.7 children per woman. While the average fertility rate in poor countries is 4.2, it reaches 4.8 in Saharan African.

In coming time, India would be leading the list of highest populated countries as China, which is currently on the top would decline its population by 2025.