That 9% is a sham. Here's the critiera for an substance addiction which only needs 2 to be checked. Note the 1st 4 points and the Tolerance point. It's easy to see how 9% checked 2 of those points (I would).

  - The substance is often taken in larger amounts or over a longer period than was intended.
  - There is a persistent desire or unsuccessful effort to cut down or control use of the substance.
  - A great deal of time is spent in activities necessary to obtain the substance, use the substance, or recover from its effects.
  - Craving, or a strong desire or urge to use the substance.
  - Recurrent use of the substance resulting in a failure to fulfill major role obligations at work, school, or home.
  - Continued use of the substance despite having persistent or recurrent social or interpersonal problems caused or exacerbated by the effects of its use.
  - Important social, occupational, or recreational activities are given up or reduced because of use of the substance.
  - Recurrent use of the substance in situations in which it is physically hazardous.
  - Use of the substance is continued despite knowledge of having a persistent or recurrent physical or psychological problem that is likely to have been caused or exacerbated by the substance.
  - Tolerance, as defined by either of the following:
      - A need for markedly increased amounts of the substance to achieve intoxication or desired effect.
      - A markedly diminished effect with continued use of the same amount of the substance.
  - Withdrawal, as manifested by either of the following:
      - The characteristic withdrawal syndrome for that substance (as specified in the DSM- 5 for each substance).
      - The substance (or a closely related substance) is taken to relieve or avoid withdrawal symptoms.