text: Table 11 shows that 15 per cent of the individuals who started use in 2005 and had presented 
  for treatment by 2014, presented within one year of initiation. A further 17 per cent presented 
  between one and two years after initiation, prior to coming to treatment, meaning that overall 31 
  per cent of the sample said they came to treatment within two years of first using opiates/crack. 
  (The fact this is not 32% is simply due to rounding). 