Question: when was the last year that is the same upside down
[{'answer': '1961', 'provenance': [{'wikipedia_id': '54330932', 'title': 'Upside down year', 'start_paragraph_id': 3, 'start_character': 37, 'end_paragraph_id': 3, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '54330932', 'title': 'Upside down year', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 90, 'bleu_score': 0.716035054694792, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8859117636126197660}, 'section': 'Section::::Abstract.'}]}]