def get_support(cluster):
    """
    Returns support
    >>> get_support({5: {'11111': ['ab', 'ac', 'df', 'bd', 'bc']},
    ...              4: {'11101': ['ef', 'eg', 'de', 'fg'], '11011': ['cd']},
    ...              3: {'11001': ['ad'], '10101': ['dg']},
    ...              2: {'10010': ['dh', 'bh'], '11000': ['be'], '10100': ['gh'],
    ...                  '10001': ['ce']},
    ...              1: {'00100': ['fh', 'eh'], '10000': ['hi']}})
    [100.0, 80.0, 60.0, 40.0, 20.0]
    """
    return [i * 100 / len(cluster) for i in cluster]