Infrastructure and Planning Data Road Mileage, 1990: 1831 Unpaved Road Mileage, 1990: 15% Registered Vehicles, 1990: 132 per mile of paved road Public Transportation Use: 1.1% of commuters Private Vehicle Use: 90% of commuters Private Vehicles - Single Occupant: 76% of commuters Average Travel Time to Work: 18.5 minutes Growth of Population, 1990-2000: 26% Growth of Population 0-24 Years Old: 19% Growth of Population 65 Years and Older: 33% Projected Enrollment Change 1990-2000 Elementary (K-5): 3366 Projected Change 1990-2000 Middle School (6-8): 2497 Projected Change 1990-2000 High School (9-12): 1684 Republican Registration, 1990: 51.54% Democratic Registration, 1990: 43.60% Change in Republican Registration, 1980-1990: 76% Change in Democratic Registration, 1980-1990: 13%