53% (1992)

71% (1994)

69% (1995)

67% (1996)

55% (2002)

70% (1992)

66% (2013)

69% (2013)

69% (1998)

68% (1995)

63% (1998)

55% (2003)

61% (1993)

75% (1996)

64% (2002)

58% (2000)

58% (1999)

59% (1999)

60% (2000)

45% (1994)