One genetic study on the racial makeup of Puerto Ricans (including all races) found them to be roughly around 61% West Eurasian/North African (overwhelmingly of Spanish provenance), 27% Sub-Saharan African and 11% Native American. Another genetic study from 2007, claimed that "the average genomewide individual (ie. Puerto Rican) ancestry proportions have been estimated as 66%, 18%, and 16%, for European, West African, and Native American, respectively." Another study estimates 63.7% European, 21.2% (Sub-Saharan) African, and 15.2% Native American; European ancestry is more prevalent in the West and in Central Puerto Rico, African in Eastern Puerto Rico, and Native American in Northern Puerto Rico.