51% (2000)

64% (1999)

65% (2001)

55% (1997)

47% (1996)

62% (2000)

56% (1984)

70% (1995)

30% (2002)

47% (1999)

47% (2002)

30% (1998)

56% (1999)

44% (1997)

63% (2001)

42% (1996)

37% (2000)

50% (2000)

56% (1999)

38% (2000)