46% (2000)

46% (2007)

36% (2009)

35% (2005)

39% (1993)

60% (2008)

54% (1998)

51% (2001)

28% (2003)

58% (2014)

38% (1997)

39% (1994)

34% (1998)

27% (2001)

48% (1990)

53% (2009)

28% (1999)

35% (1995)

52% (2006)

10% (2010)