Although the Income Tax Department is going all out to nab tax evaders in the high profile IPL-related cases,its past record shows that the agency managed to secure prosecution in barely 15 per cent of the cases. Going by this low prosecution rate,suspended IPL commissioner Lalit Modi and the franchisees he is said to have favoured,may not have much to worry about in the immediate future. That is assuming all the investigations against them result in chargesheets prosecutable in court. "On an average the department files 80-100 prosecution cases every year related to tax evasion. The prosecution rate is about 15 per cent as numerous cases are held up in litigation in various appellate tribunals,High Courts and the Supreme Court," a senior I-T officer said.