The median income for a household in the county was $62,199, and the median income for a family was $67,602 (these figures had risen to $80,573 and $89,358 respectively as of a 2007 estimate). Males had a median income of $43,371 versus $34,231 for females. The per capita income for the county was $24,285.  About 3.70% of families and 5.50% of the population were below the poverty line, including 6.70% of those under age 18 and 8.60% of those age 65 or over.
Question: By how many dollars did the median income for a family rise by 2007?
Answer: 21756