61% (2002)

62% (2003)

65% (1999)

64% (2007)

63% (1999)

55% (2000)

67% (1997)

70% (2001)

61% (1999)

57% (2001)

53% (1998)

50% (2006)

70% (2002)

56% (1994)

36% (2002)

66% (1999)

48% (2000)

61% (2007)

59% (2002)

54% (2001)