The birth rates in China rose from 10% in 1920 to 15% in 1935
Later, the figure plunged to a low of 5% in the 1940s and was followed by an exponential growth to the peak of 20% in 1950
Next, the fertility rate dropped sharply to 8% in the following five years
Finally, the figure declined gradually to 3% during the latter half of the century