Table:
text: Romanian International
Previous winners
Previous winners
Year_ Men_s_singles Women_s_singles Men_s_doubles Women_s_doubles Mixed_doubles
1998 Konstantin Dobrev Csilla Forian Konstantin Dobrev Asparuch Nedkov Diana Koleva Raina Tzvetkova Konstantin Dobrev Diana Koleva
1999 Hidetaka Yamada Maja Pohar Manuel Dubruille Vincent Laigle Diana Koleva Nely Nedjalkova Andrej Pohar Maja Pohar
2000 Oliver Pongratz Lonneke Janssen Mathias Boe Michael Jensen Britta Andersen Lene Mørk Mathias Boe Britta Andersen
2001 2005 No competition No competition No competition No competition No competition
2006 Jan Vondra Petya Nedelcheva Vladimir Metodiev Stilian Makarski Petya Nedelcheva Diana Dimova Stilian Makarski Diana Dimova
2007 Sho Sasaki Tracey Hallam Kenichi Hayakawa Kenta Kazuno Fiona Mckee Charmaine Reid Valeriy Atrashchenkov Elena Prus
2008 Ville Lang Hwang Hye-youn Vladimir Metodiev Krasimir Yankov Olga Golovanova Anastasia Prokopenko Stilian Makarski Diana Dimova

Question: In which year did Lonneke Janssen win the women's singles of the Romanian International?