 On 25 July 2007 the BBVA Foundation published their report Social portrait of Spanish people , which reported that 60 % of Spain 's population support same @-@ sex marriage . This support occurs mainly among the younger population , between 15 and 34 years old ( 75 % ) , people with higher education ( 71 % ) , people not attached to any religion ( 75 @.@ 5 % ) , and those identified by left and centre @-@ left political views ( 71 @.@ 9 % ) . However , only 44 % of the population favor the right of adoption by homosexual couples , in contrast to 42 % opposition . 
