47% (2001)

43% (1994)

57% (1995)

45% (2000)

42% (2003)

57% (1996)

45% (2009)

53% (1993)

58% (2002)

58% (1996)

44% (1996)

50% (2000)

40% (2001)

52% (1998)

46% (2003)

57% (1998)

48% (1994)

58% (2001)

26% (2003)

57% (1999)