The U.S. Greeting Card Association estimates that approximately 190 million valentines are sent each year in the US.

Half of those valentines are given to family members other than husband or wife, usually to children.

When the valentine-exchange cards made in school activities are included the figure goes up to 1 billion, and teachers become the people receiving the most valentines.

The average valentine’s spending has increased every year in the U.S, from $108 a person in 2010 to $131 in 2013.