下面是关于青少年犯罪的话题段落，考生可以学习其中的数据例证，作为写作时的例句支持。
The Government’s targeting young offenders because they commit almost half all street crimes. For robbery, 42% cautioned or convicted are under 18. For mobile phone thefts in London, 65% of those accused are under 18. The police blame street crime on a hard core of 20 or 30 young offenders in every inner city area. The Home Secretary out on patrol with the police today says the statistics also show most once freed will re-offend, hence the tagging while on bail.