42% (1986)

62% (1992)

71% (1997)

60% (2003)

48% (1992)

60% (2006)

55% (1992)

60% (1991)

38% (1991)

68% (2000)

52% (1989)

63% (1992)

52% (1999)

45% (1992)

59% (1986)

60% (2004)

60% (1999)

63% (1985)

73% (1983)

75% (2018)