Question: what percentage of american households make over 150k
[{'answer': '15 %', 'provenance': [{'wikipedia_id': '5755439', 'title': 'Household income in the United States', 'start_paragraph_id': 25, 'start_character': 128, 'end_paragraph_id': 25, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Median inflation-adjusted ("real") household income.:CBO income growth study.\n'}]}]