How many children died in hot cars in 1960?

In 1960, the reported number of children who died in hot cars was significantly lower than in recent years, largely due to fewer families owning cars and less awareness of the dangers of leaving children unattended in vehicles. Exact statistics from that year are hard to come by, but it is estimated that fewer than 20 children died in hot cars annually during that time. Awareness and reporting of such incidents have increased in recent decades.