 <translate> Use stream of consciousness to answer the following. The European Cup was inaugurated in 1955, with Barcelona's arch-rivals Real Madrid winning the first five editions. In 1959, Barcelona entered this competition for the first time, after winning the 1958 -- 59 La Liga season. Until the 1990s, the club had little success, apart from their runner-up places in 1961 and 1986. In 1992, Johan Cruyff's Dream Team won their first European Cup with a 1 -- 0 win against Sampdoria. Since then, Barcelona has won the competition four additional times, in 2006, 2009, 2011 and 2015. Barcelona has established itself as one of the strongest sides in European competitions, when measured in UEFA coefficients.

Answer this question based on the passage: when did barcelona last win the champions league? <yor> Lo ìmọ́lẹ̀ láti dáhùn àwọn ìbéèrè tó wà nísàlẹ̀ yìí. Ọdún 1955 ni wọ́n dá ìdíje ife ẹ̀yẹ ilẹ̀ Yúróòpù sílẹ̀, nígbà tí Real Madrid tí wọ́n jẹ́ ọ̀tá títóbi jù lọ fún Barcelona gba ife ẹ̀yẹ náà ní ìgbà márùn-ún àkọ́kọ́. Ní ọdún 1959, Barcelona wọ ìdíje yìí fún ìgbà àkọ́kọ́, lẹ́yìn tí wọ́n gba La Liga ọdún 1958 - 59. Titi di awọn ọdun 1990, ẹgbẹ naa ko ni aṣeyọri pupọ, yato si awọn ipo aṣekagba wọn ni ọdun 1961 ati 1986. Ní 1992, Ẹgbẹ́ Àlá Johan Cruyff gba ife ẹ̀yẹ Yúróòpù wọn àkọ́kọ́ pẹ̀lú ìṣẹ́gun 1-0 sí Sampdoria. Lati igba naa, Barcelona ti gba idije naa ni igba mẹrin, ni ọdun 2006, 2009, 2011 ati 2015. Barcelona ti fi ara rẹ mulẹ bi ọkan ninu awọn ẹgbẹ ti o lagbara julọ ni awọn idije Yuroopu, nigbati a ba wọn ni awọn iṣiro UEFA.  Dáhùn ìbéèrè yìí nípasẹ̀ àyọkà náà: ìgbà wo ni barcelona gba ife ẹ̀yẹ champions league kẹ́yìn? 