46% (2004)

53% (2002)

55% (1998)

60% (2000)

63% (1999)

48% (2004)

55% (2004)

55% (2002)

69% (2001)

57% (2000)

48% (2004)

75% (1993)

42% (2000)

53% (1992)

65% (1996)

70% (2003)

54% (1993)

60% (1999)

75% (1999)

65% (1990)