39% (1993)

36% (2009)

58% (2014)

46% (2007)

50% (1990)

35% (2005)

39% (1997)

53% (2009)

37% (1995)

60% (2008)

63% (1998)

53% (2001)

45% (1993)

30% (2001)

38% (1994)

29% (2003)

50% (2000)

33% (1998)

45% (2005)

55% (2009)