(a) whether several cases were referred to the CBI in 1999-2000, 2000-2001 and 2001-2002;
(b) if so, the number of such referred cases during the said period, year-wise;
(c) the number of cases in respect of which the investigation has been completed, year-wise;and
(d) the number of cases which has been referred to the courts by the CBI during the said period?