49% (1995)

50% (1999)

46% (2003)

40% (2001)

44% (2002)

54% (1993)

36% (1996)

26% (2003)

53% (1997)

60% (1994)

43% (2007)

58% (1996)

43% (2008)

25% (1995)

54% (1997)

54% (1999)

56% (2004)

49% (1995)

30% (2003)

41% (2002)