# Years Size Links
AP 1978–1989 26.0%
APPSP 1983–1986 26.6%
CD 1980–1982 6.0%
CDS 1987–1989 9.2%
CiU 1983–2015 5.0%
IU 1990–2004 10.5%
IULV 2012–2015 6.9%
PCE 1980–1982 10.7%
PP 1990–2015 45.2%
PSCPSOE 1978–1979 29.2%
PSOE 1978–2015 48.7%
PSOEPSC 1987–1996 44.1%
UCD 1978–1986 35.0%