On January 1, 2010, 64.5% of the population had French nationality, while 35.5% had a foreign nationality. Of these, Surinamese (13.8% of the total population), Haitians (8.8%) and Brazilians (8.7%) were the largest groups. Smaller groups included people with nationality of Guyana (1.7%), Colombia (1.0%), China (0.5%), the Dominican Republic (0.4%) and Peru (0.2%).. How many more percentage points of the population had French nationality than foreign nationality?