The graph bellow compares changes in the birth rates of China and USA between 1920 and 2000

The given diagram illustrates the amount of percentages of people in the USA and china from 1920 and 2000.
china's birth rate increased from about 10 percent in 1920 to 15 percent in 1935. Then I quickly decline to about 5 percent. Between 1945 to 1950, that surged speedily to just around 20 percent in 1950. china's birth rate boosting in the years 1950 to 2000.
Number of USA childbirth fluctuated at somewhere amid 11 and 13 proportion before to 1945. The next 5 years it showed a rapid climb in this rate, to somewhere in the vicinity of 15 percent in 1950 followed by a steady fall.
In conclusion, although the US birth rate generally higher than the birth rate of china, both birth rates followed a very similar trend. And also 2 cities growth level were the most highest quantities in 1920 and 2000.