Question: what percentage of the population is naturally blonde
[{'answer': '2 %', 'provenance': [{'wikipedia_id': '270445', 'title': 'Human hair color', 'start_paragraph_id': 18, 'start_character': 558, 'end_paragraph_id': 18, 'end_character': 570, 'bleu_score': 1.0, 'section': 'Section::::Natural hair colors.:Blond hair.\n'}]}, {'answer': "claims of the world 's population ranging from 2 % naturally blond to 16 % in the US"}, {'answer': "the world 's population ranging from 2 % naturally blond to 16 % in the US"}, {'answer': 'from 2 % naturally blond to 16 % in the US'}, {'provenance': [{'wikipedia_id': '270445', 'title': 'Human hair color', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 976, 'bleu_score': 0.8432333655281641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18189932731618078860}, 'section': 'Section::::Natural hair colors.:Blond hair.\n'}]}, {'provenance': [{'wikipedia_id': '270445', 'title': 'Human hair color', 'section': 'Section::::Natural hair colors.:Blond hair.\n', 'start_paragraph_id': 18, 'end_paragraph_id': 18, 'meta': {'evidence_span': ["Blonde hair can have almost any proportion of pheomelanin and eumelanin, but has only small amounts of both. More pheomelanin creates a more golden or strawberry blonde color, and more eumelanin creates an ash or sandy blonde color. Many children born with blonde hair develop darker hair as they age, with the majority of natural blondes developing a hair color of a dark blonde hue by the time they reach middle age. Pregnancy hormones hasten this process. Natural light blonde hair is rare in adulthood, with claims of the world's population ranging from 2% naturally blonde to 16% in the US. Blonde hair is most commonly found in Northern and Western Europeans and their descendants but can be found spread around most of Europe. Studies in 2012 showed that naturally blonde hair of Melanesians is caused by a recessive mutation in tyrosinase-related protein 1 (TYRP1). In the Solomon Islands, 26% of the population carry the gene; however, it is absent outside of Oceania.", "Natural light blonde hair is rare in adulthood, with claims of the world's population ranging from 2% naturally blonde to 16% in the US.", "Natural light blonde hair is rare in adulthood, with claims of the world's population ranging from 2% naturally blonde to 16% in the US."]}}]}]