Infrastructure and Planning Data Road Mileage, 1990: 3035 Unpaved Road Mileage, 1990: 16% Registered Vehicles, 1990: 141 per mile of paved road Public Transportation Use: 1.3% of commuters Private Vehicle Use: 88% of commuters Private Vehicles - Single Occupant: 75% of commuters Average Travel Time to Work: 17.9 minutes Growth of Population, 1990-2000: 13% Growth of Population 0-24 Years Old: 16% Growth of Population 65 Years and Older: 34% Projected Enrollment Change 1990-2000 Elementary (K-5): 5945 Projected Change 1990-2000 Middle School (6-8): 7073 Projected Change 1990-2000 High School (9-12): 9019 Republican Registration, 1990: 41.53% Democratic Registration, 1990: 51.92% Change in Republican Registration, 1980-1990: 88% Change in Democratic Registration, 1980-1990: 21%