Table:
text: New Zealand Open (badminton)
Previous winners
Previous winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1990 Nicholas Hall Stephanie Spicer Nicholas Hall Dean Galt Rhona Robertson Lynne Scutt Brent Chapman Tammy Jenkins
1991 Wei Yan Anna Oi Chan Lao Peter Blackburn Darren McDonald Rhonda Cator Anna Oi Chan Lao Peter Blackburn Lisa Campbell
1992 Dean Galt Julie Still Dean Galt Andrew Compton Rhona Robertson Tammy Jenkins Grant Walker Sheree Jefferson
1993 Dean Galt Rhona Robertson Dean Galt Kerrin Harrison Rhona Robertson Liao Yue Jin Dean Galt Liao Yue Jin
1994 Oliver Pongratz Song Yang Michael Helber Michael Keck Lisa Campbell Amanda Hardy Peter Blackburn Rhonda Cator

Question: When did Julie Still win the women's singles at the New Zealand Open (badminton) for the first time?