The term baby boomer most commonly refers to people born during the years 1960 to 1980 worldwide. In Canada it is anyone born between 1960 and 1980. Australia identifies baby boomers as those born between 1946 and 1961. Generally, after 1960 the birth rate started falling. In 1951, Sylvia F. Porter, a columnist for the New York Post, first used the term "baby boom" for the rapid rise in birthrate after Word War II.