Eurostat, Luxembourg. Euro yield curves - quarterly data: Yield curve: Spot rate yield curve / Bonds: All euro area central government bonds / Maturity: Maturity: 9 years / Geopolitical entity (reporting): Euro area (EA11-1999, EA12-2001, EA13-2007, EA15-2008, EA16-2009, EA17-2011, EA18-2014, EA19-2015, EA20-2023).