45% (1993)

38% (1997)

63% (1998)

39% (1993)

50% (2000)

53% (2001)

33% (1998)

46% (2007)

45% (2005)

36% (2009)

38% (1994)

58% (2014)

44% (1999)

28% (1999)

37% (1995)

25% (1987)

30% (2001)

50% (1990)

39% (1997)

53% (2009)