Nicaragua has approximately 4.6 million inhabitants (35 inhabitants per km ²), of which 69% Mestizo, 14% Caucasian, 9% blacks and 4% Indians. The country used to have even more people, but a large number in the eighties fled during the civil war. Nicaragua is known for its friendly and talkative people. Although they have been through much misery they remain full of laughter and are quite friendly. Most people have no training or are poorly trained. Only 28% of school children continue to the sixth grade. The Caribbean coast has its own art forms. Reggae music and poetry are both very popular art forms.