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

A glance at the line graph delineates information about the commensurability between the Chinese and US fertility rates from 1920 to 8 decades onwards.

Overall

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, it can be explicitly perceived that

this

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matter approximately had been halved and third for the USA's and China's populations, respectively, after undergoing some noticeable fluctuations. Enhancing from virtually 10% in 1920 to 15 per cent in 1935, China's fecundity

then

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nosedived abruptly to a low amount of 5% until 1945.

This

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was followed by a period of discernible escalation, with a fertile population achieving a summit of 20% in 1950. Over the latter half of the century,

however

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, a significant descent of a mere 3% is exposed by

this

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figure for the percentage of descendants. Concerning the other country, meanwhile, the trend went through an erratic value during the period 1920 to 1940, almost from 11 to 13%, before minimizing to just under 5% in 1945. The following five years encountered an ongoing mount somewhere in the vicinity of 15%, accompanied by a steady plunge to the end of the 20th century by the proximity of 7%.