38% (1997)

36% (2009)

59% (1998)

45% (1993)

27% (2001)

50% (2000)

46% (2007)

39% (1993)

51% (2001)

58% (2014)

28% (1999)

39% (1997)

38% (1994)

49% (1990)

28% (2003)

60% (2008)

35% (2005)

28% (1988)

53% (2009)

32% (1998)