63% (1998)

45% (2005)

46% (2007)

36% (2009)

39% (1993)

60% (2008)

38% (1994)

58% (2014)

53% (2001)

49% (1990)

30% (2001)

53% (2009)

45% (1993)

29% (2003)

44% (1999)

47% (1997)

37% (1995)

55% (2009)

28% (1991)

38% (2003)