As country's population has grown, so has the level of higher education

China saw its population grow last year, along with an improved male-female ratio and the level of education, according to a survey from the National Bureau of Statistics that was released on Wednesday.

The Chinese mainland had a population of 1.37 billion, an increase of 33.77 million people over the census taken in 2010, meaning the annual growth rate was 0.5 percent.

The survey, which was started on Nov 1, queried 21.31 million people, some 1.55 percent of the total population, a statement on the bureau's official website said.