Table:
text: Maltese National Badminton Championships
Past winners
Past winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1967 Kenneth Wain Hazel Tough Alfred Cefai Kenneth Wain Hazel Tough Joan Pain Kenneth Wain L. Vassallo
1968 1971 no competition no competition no competition no competition no competition
1972 Vincent Curmi Simone Vella Vincent Curmi Alfred Galea C. Worley Simone Vella Kenneth Wain L. Briscoe
1973 Vincent Curmi Carmen Worley Vincent Curmi J. Zammit-Lewis Doreen Cann Doris Cordina Alfred Cefain Carmen Worley
1974 Vincent Curmi no competition Vincent Curmi Alfred Galea no competition Kenneth Wain Simone Vella
1975 Alfred Cefai Doreen Cann Alfred Cefai Kenneth Wain Doreen Cann Doris Cordina Alfred Cefai Simone Vella
1976 Vincent Curmi Joyce Abdilla Alfred Cefai Kenneth Wain Joyce Abdilla Simone Vella Paul Vella Joyce Abdilla

Question: In which year did Carmen Worley win the women's singles category at the Maltese National Badminton Championships?