grow by something

The group began with three members in 1980, growing to seven by 1984.

They number about two billion and are growing by 240 million a year.

The market is growing by 30 percent a year, according to the company.

China now has 1.1 billion people, and the number is growing by more than 15 million a year.

Their number is growing by 15 to 20 percent a year.

The industry is growing by more than 8 percent a year.

So we are growing by a billion people every 70 days?

However, his other problem was growing greater by the moment.

The Chinese economy has been growing by 9% a year for the last 25 years.

Between 1968 and 1975 the city's population grew by over 300%.