Table:
text: List of Indian National Badminton champions
List of Winners
List of Winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1964 Suresh Goel Meena Shah Dipu Ghosh Raman Ghosh Meena Shah Sunila Apte Chandrakant Deoras Meena Shah
1965 Nandu M. Natekar Meena Shah Suresh Goel Chandrakant Deoras Meena Shah Sarojini Apte A. I. Sheikh Shobha Moorthy
1966 Dinesh Khanna Sarojini Apte Khor Chengehye Lee Guan Choong Shobha Moorthy Manda Kelkar Nandu M. Natekar Manda Kelkar
1967 Suresh Goel Sarojini Gogte Dipu Ghosh Raman Ghosh Sarojini Gogte Sunila Apte Dipu Ghosh Sushila Gogte
1968 Satish Bhatia Damayanti Tambay Raman Ghosh Chandrakant Deoras Damayanti Tambay Joe Phillips Raman Ghosh Malati Tambe Vaidya
1969 Dipu Ghosh Damayanti Tambay Dipu Ghosh Raman Ghosh Shobha Moorthy Morin Mathias Asif Parpia Rafia Latif

text: List of Indian National Badminton champions
List of Winners
List of Winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1970 Suresh Goel Damayanti Tambay Dipu Ghosh Raman Ghosh Shobha Moorthy Morin Mathias Nandu M. Natekar Shobha Moorthy
1971 Prakash Padukone Shobha Moorthy Dipu Ghosh Suresh Goel Shobha Moorthy Morin Mathias Asif Parpia Morin Mathias
1972 Prakash Padukone Rafia Latif Asif Parpia Anil Pradhan Shobha Moorthy Morin Mathias Satish Bhatia Rafia Latif
1973 Prakash Padukone Ami M. Ghia Prakash Padukone Leroy D`Sa Morin Mathias Vatsala Ramamoorthy Asif Parpia Morin Mathias
1974 Prakash Padukone Ami M. Ghia Raman Ghosh Davinder Ahuja Ami M. Ghia Morin Mathias Suresh Goel Morin Mathias
1975 Prakash Padukone Ami M. Ghia Suresh Goel Leroy D`Sa Ami M. Ghia Morin Mathias Suresh Goel Morin Mathias

Question: In the list of Indian national badminton champions, what is the highest year for Dipu Ghosh Raman Ghosh and Sarojini Gogte Sunila Apte?