How to describe a trend? For example: Until now the population of China has already been 1.7 billion, and it's projected to rise to 2 billion in 2040. How can describe this situation in one sentence without comma. Like this: By the year of 2040, the population of China will have increased to 2 billion from 1.7 billion at present. I am not sure the sentence is correct. Can any people help me with this problem? The more answer, the better.