Measures of Central Tendency: Median

A survey of $100$ households in Fictionaltown, USA found the following results:

$20\%$ of households had $0$ children

$20\%$ had $1$ child

$30\%$ had $2$ children

$15\%$ had $3$ children

$10\%$ had $4$ children

$5\%$ had $5$ children

What is the median number of children per household for this data set?