Pass Percentage of EP certification

Hi Experts,

Can you please tell me the Pass Percentage of below EP certification exams

1.SAP Consultant Certification Development Consultant SAP NetWeaver 2004s u2013 Knowledge Management and Collaboration ---C_TEP13_04S

2.SAP Consultant Certification Development Consultant SAP Netweaver 2004 u2013 Portal & KMC --C_TEP15_04

3.SAP Consultant Certification Development Consultant SAP Netweaver 2004s u2013 NetWeaver Portal-- C_TEP12_04S

4.SAP CERTIFIED DEVELOPMENT ASSOCIATE - JAVA WITH SAP NETWEAVER 7.0 --C_JA320_70

Regards,

P.Manivannan