45% (2004)

53% (2002)

55% (2002)

57% (2000)

59% (2000)

54% (1998)

63% (1999)

67% (2001)

42% (2000)

47% (2004)

47% (2004)

72% (1997)

75% (1993)

65% (1996)

64% (1996)

70% (1995)

55% (1999)

55% (2004)

59% (2002)

54% (1993)