Passage: There were 15,638 households out of which 43.00% had children under the age of 18 living with them, 59.30% were married couples living together, 8.40% had a female householder with no husband present, and 26.50% were non-families. 20.90% of all households were made up of individuals and 4.80% had someone living alone who was 65 years of age or older.  The average household size was 2.85 and the average family size was 3.33.

Question: What is the percentage of population living on their own?
20.9