The U.S. Bureau of the Census reports trends over time in health insurance coverage, by race and sex, at www.census.gov/hhes/www/hlthins/historic/index.html and www.census.gov/hhes/www/hlthins/historic/index_old.html. Which racial or ethnic group has seen the largest increase in its rate of health insurance coverage from 1987 to 2008? Is this increase largely coming from increases in the rates of government- provided insurance, employer-provided insurance, or privately purchased insurance?