■Less Than$20.000 ■$20.000to$49.939 ■Aged12to34 100% ■$50.000 or More 100% Aged 35 or Older 80% 80% 74.0 63.5 60% 60% 56.6 39.136.0 38042.3 43.4 40% 31.532.735.8 40% 36.5 24.9 26.0 19.7 20% 20% 0% 0% Heroin and Heroin-Only Nonmedical Heroin and Heroin-Only Nonmedical Nonmedical Users Oxycodone-Only Nonmedical Users Oxycodone-Only Oxycodone Users Users Oxycodone Users Users 2002-2003 United States 2002-2003 United States