The statement is false. The fertility rate doesn't measure the average number of children parents want in a year.
Explanation:
Fertility rate is an estimate of the average number of children a woman would have until the end of her reproductive period, keeping the rates observed on that date. In this sense, this indicator expresses the average reproductive condition of women in a given place, being a very important data for the analysis of demographic dynamics. According to data from the United Nations, the fertility rate is 2.52 children per woman. This result confirms a worldwide trend towards a reduction in the number of children.