Table:
text: Padma Shri Awards (1990–99)
1998
1998
Year_ Name_ Field State_ Country
1998 Cardinal Antony Padiyara Social Work Kerala India
1998 Dr. Manmohan Attavar Science & Engineering Karnataka India
1998 Shri. Lila Ram Sangwan Sports Haryana India
1998 Smt. Kanta Tyagi Social Work Madhya Pradesh India
1998 Prof. Aditya Naraian Purohit Science & Engineering Uttarakhand India
1998 Prof. Brijinder Nath Goswamy Literature & Education Chandigarh India
1998 Prof. Gurdial Singh Literature & Education Punjab India
1998 Prof. Priyambada Mohanty Hejmadi Science & Engineering Orissa India
1998 Prof. Ranjit Roy Chaudhury Medicine Delhi India
1998 Shri. Chewang Phunsog Civil Service Delhi India
1998 Shri. Kongbrailatpam Ibomcha Sharma Arts Manipur India

Question: How many years has Prof. Aditya Naraian Purohit won at the Padma Shri Awards (1990–99) ?