74% (1993)

63% (1992)

71% (1994)

76% (1991)

67% (1994)

67% (1993)

60% (1995)

64% (1993)

75% (1992)

59% (1992)

63% (1992)

60% (1994)

55% (1994)

64% (1995)

63% (1992)

67% (1994)

67% (2009)

65% (2023)