After the First World War, cottage cheese quickly became more popular. Thirty million pounds (13,600,000 kg) of cottage cheese was produced in 1919 (out of 418 million pounds (189,600,000 kg) of cheese in general in 1920), but by 1928, 87 million pounds (39,400,000 kg) was manufactured. Consumption peaked in the United States in the 1970s when dieting became popular and some $1.3 billion of it was sold per year, but in the 1980s yogurt became more popular and sales dropped considerably further in the 2000s.